diff --git a/src/libraries/System.Runtime.InteropServices/gen/ComInterfaceGenerator/ComInterfaceGeneratorHelpers.cs b/src/libraries/System.Runtime.InteropServices/gen/ComInterfaceGenerator/ComInterfaceGeneratorHelpers.cs
index 8853d90710328..62c4d533a81e1 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/ComInterfaceGenerator/ComInterfaceGeneratorHelpers.cs
+++ b/src/libraries/System.Runtime.InteropServices/gen/ComInterfaceGenerator/ComInterfaceGeneratorHelpers.cs
@@ -16,7 +16,7 @@ public static MarshallingGeneratorFactoryKey<(TargetFramework, Version)> CreateG
             // If we're in a "supported" scenario, then emit a diagnostic as our final fallback.
             generatorFactory = new UnsupportedMarshallingFactory();
 
-            generatorFactory = new NoMarshallingInfoErrorMarshallingFactory(generatorFactory);
+            generatorFactory = new NoMarshallingInfoErrorMarshallingFactory(generatorFactory, TypeNames.GeneratedComInterfaceAttribute_ShortName);
 
             // The presence of System.Runtime.CompilerServices.DisableRuntimeMarshallingAttribute is tied to TFM,
             // so we use TFM in the generator factory key instead of the Compilation as the compilation changes on every keystroke.
@@ -27,7 +27,7 @@ public static MarshallingGeneratorFactoryKey<(TargetFramework, Version)> CreateG
 
             // Since the char type can go into the P/Invoke signature here, we can only use it when
             // runtime marshalling is disabled.
-            generatorFactory = new CharMarshallingGeneratorFactory(generatorFactory, useBlittableMarshallerForUtf16: runtimeMarshallingDisabled);
+            generatorFactory = new CharMarshallingGeneratorFactory(generatorFactory, useBlittableMarshallerForUtf16: runtimeMarshallingDisabled, TypeNames.GeneratedComInterfaceAttribute_ShortName);
 
             InteropGenerationOptions interopGenerationOptions = new(UseMarshalType: true);
             generatorFactory = new MarshalAsMarshallingGeneratorFactory(interopGenerationOptions, generatorFactory);
@@ -35,7 +35,7 @@ public static MarshallingGeneratorFactoryKey<(TargetFramework, Version)> CreateG
             IMarshallingGeneratorFactory elementFactory = new AttributedMarshallingModelGeneratorFactory(
                 // Since the char type in an array will not be part of the P/Invoke signature, we can
                 // use the regular blittable marshaller in all cases.
-                new CharMarshallingGeneratorFactory(generatorFactory, useBlittableMarshallerForUtf16: true),
+                new CharMarshallingGeneratorFactory(generatorFactory, useBlittableMarshallerForUtf16: true, TypeNames.GeneratedComInterfaceAttribute_ShortName),
                 new AttributedMarshallingModelOptions(runtimeMarshallingDisabled, MarshalMode.ElementIn, MarshalMode.ElementRef, MarshalMode.ElementOut));
             // We don't need to include the later generator factories for collection elements
             // as the later generator factories only apply to parameters.
diff --git a/src/libraries/System.Runtime.InteropServices/gen/ComInterfaceGenerator/ComMethodContext.cs b/src/libraries/System.Runtime.InteropServices/gen/ComInterfaceGenerator/ComMethodContext.cs
index f4aa8979a5a1f..f46d5aa608159 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/ComInterfaceGenerator/ComMethodContext.cs
+++ b/src/libraries/System.Runtime.InteropServices/gen/ComInterfaceGenerator/ComMethodContext.cs
@@ -130,6 +130,7 @@ private MethodDeclarationSyntax GenerateShadow()
             var forwarder = new Forwarder();
             return MethodDeclaration(GenerationContext.SignatureContext.StubReturnType, MethodInfo.MethodName)
                 .WithModifiers(TokenList(Token(SyntaxKind.NewKeyword)))
+                .WithAttributeLists(List(GenerationContext.SignatureContext.AdditionalAttributes.Concat(MethodInfo.Attributes.Select(a => a.GenerateAttributeList()))))
                 .WithParameterList(ParameterList(SeparatedList(GenerationContext.SignatureContext.StubParameters)))
                 .WithExpressionBody(
                     ArrowExpressionClause(
diff --git a/src/libraries/System.Runtime.InteropServices/gen/ComInterfaceGenerator/ComMethodInfo.cs b/src/libraries/System.Runtime.InteropServices/gen/ComInterfaceGenerator/ComMethodInfo.cs
index 4d220d2953854..e11057fac7f78 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/ComInterfaceGenerator/ComMethodInfo.cs
+++ b/src/libraries/System.Runtime.InteropServices/gen/ComInterfaceGenerator/ComMethodInfo.cs
@@ -1,6 +1,7 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+using System.Collections.Generic;
 using System.Collections.Immutable;
 using System.Diagnostics;
 using System.Linq;
@@ -16,7 +17,8 @@ namespace Microsoft.Interop
     /// </summary>
     internal sealed record ComMethodInfo(
         MethodDeclarationSyntax Syntax,
-        string MethodName)
+        string MethodName,
+        SequenceEqualImmutableArray<AttributeInfo> Attributes)
     {
         /// <summary>
         /// Returns a list of tuples of ComMethodInfo, IMethodSymbol, and Diagnostic. If ComMethodInfo is null, Diagnostic will not be null, and vice versa.
@@ -108,7 +110,14 @@ private static DiagnosticOr<(ComMethodInfo, IMethodSymbol)> CalculateMethodInfo(
             {
                 return DiagnosticOr<(ComMethodInfo, IMethodSymbol)>.From(diag);
             }
-            var comMethodInfo = new ComMethodInfo(comMethodDeclaringSyntax, method.Name);
+
+            var attributes = method.GetAttributes();
+            var attributeInfos = ImmutableArray.CreateBuilder<AttributeInfo>(attributes.Length);
+            foreach (var attr in attributes)
+            {
+                attributeInfos.Add(AttributeInfo.From(attr));
+            }
+            var comMethodInfo = new ComMethodInfo(comMethodDeclaringSyntax, method.Name, attributeInfos.MoveToImmutable().ToSequenceEqual());
             return DiagnosticOr<(ComMethodInfo, IMethodSymbol)>.From((comMethodInfo, method));
         }
     }
diff --git a/src/libraries/System.Runtime.InteropServices/gen/ComInterfaceGenerator/VtableIndexStubGeneratorHelpers.cs b/src/libraries/System.Runtime.InteropServices/gen/ComInterfaceGenerator/VtableIndexStubGeneratorHelpers.cs
index 204c63fc7ba9c..9cc099516c983 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/ComInterfaceGenerator/VtableIndexStubGeneratorHelpers.cs
+++ b/src/libraries/System.Runtime.InteropServices/gen/ComInterfaceGenerator/VtableIndexStubGeneratorHelpers.cs
@@ -16,7 +16,7 @@ public static MarshallingGeneratorFactoryKey<(TargetFramework, Version)> CreateG
             // If we're in a "supported" scenario, then emit a diagnostic as our final fallback.
             generatorFactory = new UnsupportedMarshallingFactory();
 
-            generatorFactory = new NoMarshallingInfoErrorMarshallingFactory(generatorFactory);
+            generatorFactory = new NoMarshallingInfoErrorMarshallingFactory(generatorFactory, TypeNames.VirtualMethodIndexAttribute_ShortName);
 
             // The presence of System.Runtime.CompilerServices.DisableRuntimeMarshallingAttribute is tied to TFM,
             // so we use TFM in the generator factory key instead of the Compilation as the compilation changes on every keystroke.
@@ -27,7 +27,7 @@ public static MarshallingGeneratorFactoryKey<(TargetFramework, Version)> CreateG
 
             // Since the char type can go into the P/Invoke signature here, we can only use it when
             // runtime marshalling is disabled.
-            generatorFactory = new CharMarshallingGeneratorFactory(generatorFactory, useBlittableMarshallerForUtf16: runtimeMarshallingDisabled);
+            generatorFactory = new CharMarshallingGeneratorFactory(generatorFactory, useBlittableMarshallerForUtf16: runtimeMarshallingDisabled, TypeNames.VirtualMethodIndexAttribute_ShortName);
 
             InteropGenerationOptions interopGenerationOptions = new(UseMarshalType: true);
             generatorFactory = new MarshalAsMarshallingGeneratorFactory(interopGenerationOptions, generatorFactory);
@@ -35,7 +35,7 @@ public static MarshallingGeneratorFactoryKey<(TargetFramework, Version)> CreateG
             IMarshallingGeneratorFactory elementFactory = new AttributedMarshallingModelGeneratorFactory(
                 // Since the char type in an array will not be part of the P/Invoke signature, we can
                 // use the regular blittable marshaller in all cases.
-                new CharMarshallingGeneratorFactory(generatorFactory, useBlittableMarshallerForUtf16: true),
+                new CharMarshallingGeneratorFactory(generatorFactory, useBlittableMarshallerForUtf16: true, TypeNames.VirtualMethodIndexAttribute_ShortName),
                 new AttributedMarshallingModelOptions(runtimeMarshallingDisabled, MarshalMode.ElementIn, MarshalMode.ElementRef, MarshalMode.ElementOut));
             // We don't need to include the later generator factories for collection elements
             // as the later generator factories only apply to parameters.
diff --git a/src/libraries/System.Runtime.InteropServices/gen/LibraryImportGenerator/LibraryImportGeneratorHelpers.cs b/src/libraries/System.Runtime.InteropServices/gen/LibraryImportGenerator/LibraryImportGeneratorHelpers.cs
index 80e48ed6510c6..d07d101732b04 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/LibraryImportGenerator/LibraryImportGeneratorHelpers.cs
+++ b/src/libraries/System.Runtime.InteropServices/gen/LibraryImportGenerator/LibraryImportGeneratorHelpers.cs
@@ -32,7 +32,7 @@ public static MarshallingGeneratorFactoryKey<(TargetFramework, Version, LibraryI
                     generatorFactory = new UnsupportedMarshallingFactory();
                 }
 
-                generatorFactory = new NoMarshallingInfoErrorMarshallingFactory(generatorFactory);
+                generatorFactory = new NoMarshallingInfoErrorMarshallingFactory(generatorFactory, TypeNames.LibraryImportAttribute_ShortName);
 
                 // The presence of System.Runtime.CompilerServices.DisableRuntimeMarshallingAttribute is tied to TFM,
                 // so we use TFM in the generator factory key instead of the Compilation as the compilation changes on every keystroke.
@@ -43,7 +43,7 @@ public static MarshallingGeneratorFactoryKey<(TargetFramework, Version, LibraryI
 
                 // Since the char type can go into the P/Invoke signature here, we can only use it when
                 // runtime marshalling is disabled.
-                generatorFactory = new CharMarshallingGeneratorFactory(generatorFactory, useBlittableMarshallerForUtf16: runtimeMarshallingDisabled);
+                generatorFactory = new CharMarshallingGeneratorFactory(generatorFactory, useBlittableMarshallerForUtf16: runtimeMarshallingDisabled, TypeNames.LibraryImportAttribute_ShortName);
 
                 InteropGenerationOptions interopGenerationOptions = new(options.UseMarshalType);
                 generatorFactory = new MarshalAsMarshallingGeneratorFactory(interopGenerationOptions, generatorFactory);
@@ -51,7 +51,7 @@ public static MarshallingGeneratorFactoryKey<(TargetFramework, Version, LibraryI
                 IMarshallingGeneratorFactory elementFactory = new AttributedMarshallingModelGeneratorFactory(
                     // Since the char type in an array will not be part of the P/Invoke signature, we can
                     // use the regular blittable marshaller in all cases.
-                    new CharMarshallingGeneratorFactory(generatorFactory, useBlittableMarshallerForUtf16: true),
+                    new CharMarshallingGeneratorFactory(generatorFactory, useBlittableMarshallerForUtf16: true, TypeNames.LibraryImportAttribute_ShortName),
                     new AttributedMarshallingModelOptions(runtimeMarshallingDisabled, MarshalMode.ElementIn, MarshalMode.ElementRef, MarshalMode.ElementOut));
                 // We don't need to include the later generator factories for collection elements
                 // as the later generator factories only apply to parameters.
diff --git a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Marshalling/CharMarshallingGeneratorFactory.cs b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Marshalling/CharMarshallingGeneratorFactory.cs
index f24c1235a7ac7..f9ef0ad8de50a 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Marshalling/CharMarshallingGeneratorFactory.cs
+++ b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Marshalling/CharMarshallingGeneratorFactory.cs
@@ -16,11 +16,21 @@ public sealed class CharMarshallingGeneratorFactory : IMarshallingGeneratorFacto
 
         private readonly IMarshallingGeneratorFactory _inner;
         private readonly bool _useBlittableMarshallerForUtf16;
+        private readonly string _stringMarshallingAttribute;
 
+        // Needed for API compatibility with preview 4
         public CharMarshallingGeneratorFactory(IMarshallingGeneratorFactory inner, bool useBlittableMarshallerForUtf16)
         {
             _inner = inner;
             _useBlittableMarshallerForUtf16 = useBlittableMarshallerForUtf16;
+            _stringMarshallingAttribute = "LibraryImportGenerator";
+        }
+
+        public CharMarshallingGeneratorFactory(IMarshallingGeneratorFactory inner, bool useBlittableMarshallerForUtf16, string stringMarshallingAttribute)
+        {
+            _inner = inner;
+            _useBlittableMarshallerForUtf16 = useBlittableMarshallerForUtf16;
+            _stringMarshallingAttribute = stringMarshallingAttribute;
         }
 
         public IMarshallingGenerator Create(TypePositionInfo info, StubCodeContext context)
@@ -41,7 +51,7 @@ private IMarshallingGenerator CreateCharMarshaller(TypePositionInfo info, StubCo
                 // [Compat] Require explicit marshalling information.
                 throw new MarshallingNotSupportedException(info, context)
                 {
-                    NotSupportedDetails = SR.MarshallingStringOrCharAsUndefinedNotSupported
+                    NotSupportedDetails = string.Format(SR.MarshallingStringOrCharAsUndefinedNotSupported, _stringMarshallingAttribute)
                 };
             }
 
diff --git a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Marshalling/NoMarshallingInfoErrorMarshallingFactory.cs b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Marshalling/NoMarshallingInfoErrorMarshallingFactory.cs
index dcf739b6f2ab5..c7a7123dfaabb 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Marshalling/NoMarshallingInfoErrorMarshallingFactory.cs
+++ b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Marshalling/NoMarshallingInfoErrorMarshallingFactory.cs
@@ -27,8 +27,14 @@ public sealed class NoMarshallingInfoErrorMarshallingFactory : IMarshallingGener
             return _inner.Create(info, context);
         }
 
+        // Necessary for API compatibility with preview 4 SDK
         public NoMarshallingInfoErrorMarshallingFactory(IMarshallingGeneratorFactory inner)
-            : this(inner, DefaultTypeToErrorMessageMap)
+            : this(inner, DefaultTypeToErrorMessageMap("LibraryImportAttribute"))
+        {
+        }
+
+        public NoMarshallingInfoErrorMarshallingFactory(IMarshallingGeneratorFactory inner, string stringMarshallingAttribute)
+            : this(inner, DefaultTypeToErrorMessageMap(stringMarshallingAttribute))
         {
         }
 
@@ -40,10 +46,10 @@ private NoMarshallingInfoErrorMarshallingFactory(IMarshallingGeneratorFactory in
 
         public ImmutableDictionary<ManagedTypeInfo, string> CustomTypeToErrorMessageMap { get; }
 
-        private static ImmutableDictionary<ManagedTypeInfo, string> DefaultTypeToErrorMessageMap { get; } =
-            ImmutableDictionary.CreateRange(new Dictionary<ManagedTypeInfo, string>
+        private static ImmutableDictionary<ManagedTypeInfo, string> DefaultTypeToErrorMessageMap(string stringMarshallingAttribute)
+            => ImmutableDictionary.CreateRange(new Dictionary<ManagedTypeInfo, string>
             {
-                { SpecialTypeInfo.String, SR.MarshallingStringOrCharAsUndefinedNotSupported },
+                { SpecialTypeInfo.String, string.Format(SR.MarshallingStringOrCharAsUndefinedNotSupported, stringMarshallingAttribute) },
                 { SpecialTypeInfo.Boolean, SR.MarshallingBoolAsUndefinedNotSupported },
             });
     }
diff --git a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/Strings.resx b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/Strings.resx
index 3b02570f60da9..229bda1f7bc72 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/Strings.resx
+++ b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/Strings.resx
@@ -142,7 +142,7 @@
     <value>Marshalling char with 'StringMarshalling.{0}' is not supported. Instead, manually convert the char type to the desired byte representation and pass to the source-generated P/Invoke.</value>
   </data>
   <data name="MarshallingStringOrCharAsUndefinedNotSupported" xml:space="preserve">
-    <value>Marshalling string or char without explicit marshalling information is not supported. Specify 'LibraryImportAttribute.StringMarshalling', 'LibraryImportAttribute.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</value>
+    <value>Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</value>
   </data>
   <data name="SafeHandleByRefMustBeConcrete" xml:space="preserve">
     <value>An abstract type derived from 'SafeHandle' cannot be marshalled by reference. The provided type must be concrete.</value>
diff --git a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.cs.xlf b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.cs.xlf
index ebefc3c6bfa13..928b738e3978c 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.cs.xlf
+++ b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.cs.xlf
@@ -98,8 +98,8 @@
         <note />
       </trans-unit>
       <trans-unit id="MarshallingStringOrCharAsUndefinedNotSupported">
-        <source>Marshalling string or char without explicit marshalling information is not supported. Specify 'LibraryImportAttribute.StringMarshalling', 'LibraryImportAttribute.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
-        <target state="translated">Zařazování řetězce nebo znaku bez explicitních informací o zařazování se nepodporuje. Zadejte LibraryImportAttribute.StringMarshalling, LibraryImportAttribute.StringMarshallingCustomType, MarshalUsingAttribute nebo MarshalAsAttribute.</target>
+        <source>Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
+        <target state="new">Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</target>
         <note />
       </trans-unit>
       <trans-unit id="RuntimeMarshallingMustBeDisabled">
diff --git a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.de.xlf b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.de.xlf
index df78216350d26..9380273ad22cf 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.de.xlf
+++ b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.de.xlf
@@ -98,8 +98,8 @@
         <note />
       </trans-unit>
       <trans-unit id="MarshallingStringOrCharAsUndefinedNotSupported">
-        <source>Marshalling string or char without explicit marshalling information is not supported. Specify 'LibraryImportAttribute.StringMarshalling', 'LibraryImportAttribute.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
-        <target state="translated">Das Marshalling von Zeichenfolgen oder Zeichen ohne explizite Marshalling-Informationen wird nicht unterstützt. Geben Sie „LibraryImportAttribute.StringMarshalling“, „LibraryImportAttribute.StringMarshallingCustomType“, „MarshalUsingAttribute“ oder „MarshalAsAttribute“ an.</target>
+        <source>Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
+        <target state="new">Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</target>
         <note />
       </trans-unit>
       <trans-unit id="RuntimeMarshallingMustBeDisabled">
diff --git a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.es.xlf b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.es.xlf
index 9820e5f148793..975e7598bc9c6 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.es.xlf
+++ b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.es.xlf
@@ -98,8 +98,8 @@
         <note />
       </trans-unit>
       <trans-unit id="MarshallingStringOrCharAsUndefinedNotSupported">
-        <source>Marshalling string or char without explicit marshalling information is not supported. Specify 'LibraryImportAttribute.StringMarshalling', 'LibraryImportAttribute.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
-        <target state="translated">No se admite la serialización de cadenas o caracteres sin información de serialización explícita. Especifique \"LibraryImportAttribute.StringMars slaing\", \"LibraryImportAttribute.StringMars slaingCustomType\", \"MarshalUsingAttribute\" o \"MarshalAsAttribute\".</target>
+        <source>Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
+        <target state="new">Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</target>
         <note />
       </trans-unit>
       <trans-unit id="RuntimeMarshallingMustBeDisabled">
diff --git a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.fr.xlf b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.fr.xlf
index cbaa2ead67640..f3eee5c5954ef 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.fr.xlf
+++ b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.fr.xlf
@@ -98,8 +98,8 @@
         <note />
       </trans-unit>
       <trans-unit id="MarshallingStringOrCharAsUndefinedNotSupported">
-        <source>Marshalling string or char without explicit marshalling information is not supported. Specify 'LibraryImportAttribute.StringMarshalling', 'LibraryImportAttribute.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
-        <target state="translated">Le marshaling de chaîne ou de char sans informations de marshaling explicites n’est pas pris en charge. Spécifiez « LibraryImportAttribute.StringMars streaming », « LibraryImportAttribute.StringMars streamingCustomType », « MarshalUsingAttribute » ou « MarshalAsAttribute ».</target>
+        <source>Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
+        <target state="new">Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</target>
         <note />
       </trans-unit>
       <trans-unit id="RuntimeMarshallingMustBeDisabled">
diff --git a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.it.xlf b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.it.xlf
index 6cc6a7e966a4c..35d51e7cc2eaa 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.it.xlf
+++ b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.it.xlf
@@ -98,8 +98,8 @@
         <note />
       </trans-unit>
       <trans-unit id="MarshallingStringOrCharAsUndefinedNotSupported">
-        <source>Marshalling string or char without explicit marshalling information is not supported. Specify 'LibraryImportAttribute.StringMarshalling', 'LibraryImportAttribute.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
-        <target state="translated">Il marshalling di stringa o carattere senza informazioni di marshalling esplicite non è supportato. Specificare 'LibraryImportAttribute.StringMarshalling', 'LibraryImportAttribute.StringMarshallingCustomType', 'MarshalUsingAttribute' o 'MarshalAsAttribute'.</target>
+        <source>Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
+        <target state="new">Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</target>
         <note />
       </trans-unit>
       <trans-unit id="RuntimeMarshallingMustBeDisabled">
diff --git a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.ja.xlf b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.ja.xlf
index 5fc3ad038972e..1931bd4f46a7a 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.ja.xlf
+++ b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.ja.xlf
@@ -98,8 +98,8 @@
         <note />
       </trans-unit>
       <trans-unit id="MarshallingStringOrCharAsUndefinedNotSupported">
-        <source>Marshalling string or char without explicit marshalling information is not supported. Specify 'LibraryImportAttribute.StringMarshalling', 'LibraryImportAttribute.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
-        <target state="translated">明示的なマーシャリング情報を含まない文字列または文字のマーシャリングはサポートされていません。'LibraryImportAttribute.StringMarstailing'、'LibraryImportAttribute.StringMarshallingCustomType'、'MarshalUsingAttribute' または 'MarshalAsAttribute' を指定します。</target>
+        <source>Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
+        <target state="new">Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</target>
         <note />
       </trans-unit>
       <trans-unit id="RuntimeMarshallingMustBeDisabled">
diff --git a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.ko.xlf b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.ko.xlf
index f18c344d37eff..e05123307f849 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.ko.xlf
+++ b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.ko.xlf
@@ -98,8 +98,8 @@
         <note />
       </trans-unit>
       <trans-unit id="MarshallingStringOrCharAsUndefinedNotSupported">
-        <source>Marshalling string or char without explicit marshalling information is not supported. Specify 'LibraryImportAttribute.StringMarshalling', 'LibraryImportAttribute.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
-        <target state="translated">명시적 마샬링 정보 없이 문자열 또는 문자를 마샬링할 수 없습니다. 'LibraryImportAttribute.StringMarshalling', 'LibraryImportAttribute.StringMarshallingCustomType', 'MarshalUsingAttribute' 또는 'MarshalAsAttribute'를 지정합니다.</target>
+        <source>Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
+        <target state="new">Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</target>
         <note />
       </trans-unit>
       <trans-unit id="RuntimeMarshallingMustBeDisabled">
diff --git a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.pl.xlf b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.pl.xlf
index 1ad777bd1e573..7b0fdca47ad54 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.pl.xlf
+++ b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.pl.xlf
@@ -98,8 +98,8 @@
         <note />
       </trans-unit>
       <trans-unit id="MarshallingStringOrCharAsUndefinedNotSupported">
-        <source>Marshalling string or char without explicit marshalling information is not supported. Specify 'LibraryImportAttribute.StringMarshalling', 'LibraryImportAttribute.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
-        <target state="translated">Ciągu lub znak marshallingu bez jawnych informacji o marshallingu nie jest obsługiwany. Określ atrybuty „LibraryImportAttribute.StringMarshalling”, „LibraryImportAttribute.StringMarshallingCustomType”, „MarshalUsingAttribute” lub „MarshalAsAttribute”.</target>
+        <source>Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
+        <target state="new">Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</target>
         <note />
       </trans-unit>
       <trans-unit id="RuntimeMarshallingMustBeDisabled">
diff --git a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.pt-BR.xlf b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.pt-BR.xlf
index cb7dbd8e4157e..d9611fd6f2da1 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.pt-BR.xlf
+++ b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.pt-BR.xlf
@@ -98,8 +98,8 @@
         <note />
       </trans-unit>
       <trans-unit id="MarshallingStringOrCharAsUndefinedNotSupported">
-        <source>Marshalling string or char without explicit marshalling information is not supported. Specify 'LibraryImportAttribute.StringMarshalling', 'LibraryImportAttribute.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
-        <target state="translated">A cadeia de caracteres de marshalling ou char sem informações explícitas de marshalling não é suportado. Especifique 'LibraryImportAttribute.StringMarshalling', 'LibraryImportAttribute.StringMarshallingCustomType', 'MarshalUsingAttribute' ou 'MarshalAsAttribute'.</target>
+        <source>Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
+        <target state="new">Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</target>
         <note />
       </trans-unit>
       <trans-unit id="RuntimeMarshallingMustBeDisabled">
diff --git a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.ru.xlf b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.ru.xlf
index e9de2df24db1c..b1d7fc21a9f91 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.ru.xlf
+++ b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.ru.xlf
@@ -98,8 +98,8 @@
         <note />
       </trans-unit>
       <trans-unit id="MarshallingStringOrCharAsUndefinedNotSupported">
-        <source>Marshalling string or char without explicit marshalling information is not supported. Specify 'LibraryImportAttribute.StringMarshalling', 'LibraryImportAttribute.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
-        <target state="translated">Строка или символ со строкой или символом без явных сведений о маршалинге не поддерживаются. Укажите \"LibraryImportAttribute.StringMarsing\", \"LibraryImportAttribute.StringMarsingCustomType\", \"MarshalUsingAttribute\" или \"MarshalAsAttribute\".</target>
+        <source>Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
+        <target state="new">Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</target>
         <note />
       </trans-unit>
       <trans-unit id="RuntimeMarshallingMustBeDisabled">
diff --git a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.tr.xlf b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.tr.xlf
index 489997c6733ba..6c31b5e9c03ab 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.tr.xlf
+++ b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.tr.xlf
@@ -98,8 +98,8 @@
         <note />
       </trans-unit>
       <trans-unit id="MarshallingStringOrCharAsUndefinedNotSupported">
-        <source>Marshalling string or char without explicit marshalling information is not supported. Specify 'LibraryImportAttribute.StringMarshalling', 'LibraryImportAttribute.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
-        <target state="translated">Açık sıralama bilgileri olmadan dize veya karakter sıralama desteklenmiyor. 'LibraryImportAttribute.StringMarshalling', 'LibraryImportAttribute.StringMarshallingCustomType', 'MarshalUsingAttribute' veya 'MarshalAsAttribute' belirtin.</target>
+        <source>Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
+        <target state="new">Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</target>
         <note />
       </trans-unit>
       <trans-unit id="RuntimeMarshallingMustBeDisabled">
diff --git a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.zh-Hans.xlf b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.zh-Hans.xlf
index 181a35f87a007..e98fd3fb4996e 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.zh-Hans.xlf
+++ b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.zh-Hans.xlf
@@ -98,8 +98,8 @@
         <note />
       </trans-unit>
       <trans-unit id="MarshallingStringOrCharAsUndefinedNotSupported">
-        <source>Marshalling string or char without explicit marshalling information is not supported. Specify 'LibraryImportAttribute.StringMarshalling', 'LibraryImportAttribute.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
-        <target state="translated">不支持封送没有显式封送信息的字符串或字符。请指定 \"LibraryImportAttribute.StringMarshalling\"、 \"LibraryImportAttribute.StringMarshallingCustomType\"、\"MarshalUsingAttribute\" 或 \"MarshalAsAttribute\"。</target>
+        <source>Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
+        <target state="new">Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</target>
         <note />
       </trans-unit>
       <trans-unit id="RuntimeMarshallingMustBeDisabled">
diff --git a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.zh-Hant.xlf b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.zh-Hant.xlf
index 9ab76e86775a5..857439822957e 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.zh-Hant.xlf
+++ b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/Resources/xlf/Strings.zh-Hant.xlf
@@ -98,8 +98,8 @@
         <note />
       </trans-unit>
       <trans-unit id="MarshallingStringOrCharAsUndefinedNotSupported">
-        <source>Marshalling string or char without explicit marshalling information is not supported. Specify 'LibraryImportAttribute.StringMarshalling', 'LibraryImportAttribute.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
-        <target state="translated">不支援在未明確封送處理資訊的情況下封送處理字串或字元。請指定 'LibraryImportAttribute.StringMarshalling'、'LibraryImportAttribute.StringMarshallingCustomType'、'MarshalUsingAttribute' 或 'MarshalAsAttribute'。</target>
+        <source>Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</source>
+        <target state="new">Marshalling string or char without explicit marshalling information is not supported. Specify '{0}.StringMarshalling', '{0}.StringMarshallingCustomType', 'MarshalUsingAttribute' or 'MarshalAsAttribute'.</target>
         <note />
       </trans-unit>
       <trans-unit id="RuntimeMarshallingMustBeDisabled">
diff --git a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/TypeNames.cs b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/TypeNames.cs
index f91c94761732b..de83283638af6 100644
--- a/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/TypeNames.cs
+++ b/src/libraries/System.Runtime.InteropServices/gen/Microsoft.Interop.SourceGeneration/TypeNames.cs
@@ -7,6 +7,7 @@ public static class TypeNames
     {
         public const string DllImportAttribute = "System.Runtime.InteropServices.DllImportAttribute";
         public const string LibraryImportAttribute = "System.Runtime.InteropServices.LibraryImportAttribute";
+        public const string LibraryImportAttribute_ShortName = "LibraryImportAttribute";
         public const string StringMarshalling = "System.Runtime.InteropServices.StringMarshalling";
 
         public const string NativeMarshallingAttribute = "System.Runtime.InteropServices.Marshalling.NativeMarshallingAttribute";
@@ -37,6 +38,7 @@ public static class TypeNames
         public const string System_Runtime_InteropServices_ComImportAttribute = "System.Runtime.InteropServices.ComImportAttribute";
 
         public const string VirtualMethodIndexAttribute = "System.Runtime.InteropServices.Marshalling.VirtualMethodIndexAttribute";
+        public const string VirtualMethodIndexAttribute_ShortName = "VirtualMethodIndexAttribute";
 
         public const string IUnmanagedVirtualMethodTableProvider = "System.Runtime.InteropServices.Marshalling.IUnmanagedVirtualMethodTableProvider";
 
@@ -110,6 +112,7 @@ public static string MarshalEx(InteropGenerationOptions options)
         public const string System_Runtime_CompilerServices_RuntimeHelpers = "System.Runtime.CompilerServices.RuntimeHelpers";
 
         public const string GeneratedComInterfaceAttribute = "System.Runtime.InteropServices.Marshalling.GeneratedComInterfaceAttribute";
+        public const string GeneratedComInterfaceAttribute_ShortName = "GeneratedComInterfaceAttribute";
 
         public const string InterfaceTypeAttribute = "System.Runtime.InteropServices.InterfaceTypeAttribute";
 
diff --git a/src/libraries/System.Runtime.InteropServices/tests/ComInterfaceGenerator.Unit.Tests/ComInterfaceGeneratorOutputShape.cs b/src/libraries/System.Runtime.InteropServices/tests/ComInterfaceGenerator.Unit.Tests/ComInterfaceGeneratorOutputShape.cs
index b592d8b1815cb..c21ba56ccea12 100644
--- a/src/libraries/System.Runtime.InteropServices/tests/ComInterfaceGenerator.Unit.Tests/ComInterfaceGeneratorOutputShape.cs
+++ b/src/libraries/System.Runtime.InteropServices/tests/ComInterfaceGenerator.Unit.Tests/ComInterfaceGeneratorOutputShape.cs
@@ -161,7 +161,7 @@ partial interface IDerivedIface : IFoo
 
             static void VerifyCompilation(Compilation comp)
             {
-                Assert.True(comp.GetTypeByMetadataName("Test.IFoo")
+                Assert.True(comp.GetTypeByMetadataName("Test.IDerivedIface")
                     ?.GetMembers()
                     .Where(m => m.Kind == SymbolKind.Method && m.Name == "Bar")
                     .SingleOrDefault()