Cannot build and run MAUI app in Simulator after adding BindingProject

[Hilmilein]

Apple platform

iOS

Framework version

net10.0-*

Affected platform version

VS 2026, 18.3, net10.0-ios

Description

I'm not able to build and run my MAU project in the iOS simulator after adding an iOS Binding library. project

The binding library has the following reference to a native iOS library.

<NativeReference Condition="$(TargetFramework.Contains('-ios'))" Include="..\2\ulrt.xcframework">
  <Kind>Framework</Kind>
  <SmartLink>false</SmartLink>
  <ForceLoad>false</ForceLoad>
  <LinkerFlags>-ObjC</LinkerFlags>
</NativeReference>

The binding library builds fine. and I can see in the debug folder a UltraLite.Native.iOS.resources.zip file.

This zip file has 2 directories:

ios-arm64 and
ios-x86-x64-simulator.

This is the content of the Info.plist file:

<?xml version="1.0" `encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>AvailableLibraries</key>
	<array>
		<dict>
			<key>BinaryPath</key>
			<string>libulrt.a</string>
			<key>LibraryIdentifier</key>
			<string>ios-x86_64-simulator</string>
			<key>LibraryPath</key>
			<string>libulrt.a</string>
			<key>SupportedArchitectures</key>
			<array>
				<string>x64</string>
			</array>
			<key>SupportedPlatform</key>
			<string>ios</string>
			<key>SupportedPlatformVariant</key>
			<string>simulator</string>
		</dict>
		<dict>
			<key>BinaryPath</key>
			<string>libulrt.a</string>
			<key>LibraryIdentifier</key>
			<string>ios-arm64</string>
			<key>LibraryPath</key>
			<string>libulrt.a</string>
	```
		<key>SupportedArchitectures</key>
			<array>
				<string>arm64</string>
			</array>
			<key>SupportedPlatform</key>
			<string>ios</string>
		</dict>
	</array>
	<key>CFBundlePackageType</key>
	<string>XFWK</string>
	<key>XCFrameworkFormatVersion</key>
	<string>1.0</string>
</dict>
</plist>

---

When I try to run and build tthe MAUI app I get the following error:

No matching framework found inside 'C:/bgdevelopment/eMotion/dev-MAUI/Source/Library/UltraLite.Native.iOS/bin/Debug/net10.0-ios/UltraLite.Native.iOS.resources.zip'. SupportedPlatform: 'ios', SupportedPlatformVariant: 'simulator', SupportedArchitectures: 'x86_64'.

Following suggestions from other issues from users I have added the following to my MAUI project:

 <PropertyGroup Condition="'$(TargetFramework.Contains(&quot;ios&quot;)) and $(RuntimeIdentifier) != 'ios-arm64'">
   <RuntimeIdentifier>iossimulator-x64</RuntimeIdentifier>
   <ForceSimulatorX64ArchitectureInIDE>true</ForceSimulatorX64ArchitectureInIDE>
 </PropertyGroup>

It does not help.

The Mac (MacBook Air M3, XCode 26.2) connects fine to my machine. I can easily build and run the MAUI app with an empty iOS binding library.

At the moment I don't have an iPad available, so I don't know if it would build and run on iPad directly.

The library is a ThirdParty framework, I do not have the source code to rebuild for an arm64 based Simulator build.

Many thanks in advance!

Steps to Reproduce

Add new binding library project that references a ulrt.xcframework ios-x86_64-simulato and ios-arm64. Try to build and run the application on the Simulator and it fails.

Did you find any workaround?

No response

Build logs

No response

[rolfbjarne]

Could you please get a binary build log (binlog) that shows the error, as explained here: https://github.com/dotnet/macios/wiki/Diagnosis#binary-build-logs?

Thanks!

[Hilmilein]

CentralNode_devenv_PID=34668_x64_BuildManager_Unnamed_7.zip

Hello Rolf,

ok, I have uploaded the binary build log.

Many thanks,

Hilmar

[rolfbjarne]

Can you try changing Kind=Framework to Kind=Static in the binding project and see if that makes a difference?

<Kind>Static</Kind>

If not, please provide a test solution (with both the binding project + a project consuming that binding project) we can use to reproduce the problem.

[Hilmilein]

Hello Rolf,

is set already to static before, since inside the 2ulrt.xcframework folder there are 2 .a libraries for ios-x86_64-simulator and for ios-arm64.

I will provide you with a minimal solution.

Many thanks in advance!

Best Regards,

Hilmar