Is there an existing issue for this?
Describe the bug
After upgrading from 13.2.4 to 13.3.0 local dev using aspire run fails to start.
Expected Behavior
aspire run continue to work.
Steps To Reproduce
The app contains multiple Azure Container App.
Local debugging is done without any Azure resources. Also I have an AddAzureContainerAppEnvironment("appname-env") in the code.
Therefore I don't understand the message:
Step 'validate-azure-container-apps' failed: Resource 'backend' is configured to publish as an Azure Container App, but there are no 'AzureContainerAppEnvironmentResource' resources. Ensure you have added one by calling 'AddAzureContainerAppEnvironment'.
Exceptions (if any)
[2026-05-11 14:33:48.695] [DBUG] [DotNetCliRunner] Starting backchannel connection to AppHost at /home/UserName/.aspire/cli/runtime/sockets/cli.sock.3e762b3246f4
[2026-05-11 14:33:48.695] [DBUG] [AppHostCliBackchannel] Connecting to AppHost backchannel at /home/UserName/.aspire/cli/runtime/sockets/cli.sock.3e762b3246f4 (autoReconnect=False, retryCount=0)
[2026-05-11 14:33:48.703] [DBUG] [ProcessExecutionFactory] dotnet(384754) waiting for exit
[2026-05-11 14:33:48.813] [INFO] [AppHost] Using launch settings from /home/UserName/reposgh/src/AppName.AppHost/Properties/launchSettings.json...
[2026-05-11 14:33:49.195] [DBUG] [AppHostCliBackchannel] Connecting to AppHost backchannel at /home/UserName/.aspire/cli/runtime/sockets/cli.sock.3e762b3246f4 (autoReconnect=False, retryCount=10)
[2026-05-11 14:33:49.507] [INFO] [AppHost] dbug: Aspire.Hosting.DeveloperCertificateService[0]
[2026-05-11 14:33:49.507] [INFO] [AppHost] Developer certificate HTTPS/TLS termination support: True
[2026-05-11 14:33:49.513] [INFO] [AppHost] dbug: Aspire.Hosting.FileSystemService[0]
[2026-05-11 14:33:49.513] [INFO] [AppHost] Allocated temporary file: /tmp/aspireolr9s7/runtimeconfig.json
[2026-05-11 14:33:49.620] [INFO] [AppHost] fail: Aspire.Hosting.DistributedApplication[0]
[2026-05-11 14:33:49.620] [INFO] [AppHost] Step 'validate-azure-container-apps' failed.
[2026-05-11 14:33:49.620] [INFO] [AppHost] System.InvalidOperationException: Step 'validate-azure-container-apps' failed: Resource 'backend' is configured to publish as an Azure Container App, but there are no 'AzureContainerAppEnvironmentResource' resources. Ensure you have added one by calling 'AddAzureContainerAppEnvironment'.
[2026-05-11 14:33:49.620] [INFO] [AppHost] ---> System.InvalidOperationException: Resource 'backend' is configured to publish as an Azure Container App, but there are no 'AzureContainerAppEnvironmentResource' resources. Ensure you have added one by calling 'AddAzureContainerAppEnvironment'.
[2026-05-11 14:33:49.620] [INFO] [AppHost] at Aspire.Hosting.AzureContainerAppExtensions.<>c.<AddAzureContainerAppsInfrastructureCore>b__1_2(PipelineStepContext ctx) in /_/src/Aspire.Hosting.Azure.AppContainers/AzureContainerAppExtensions.cs:line 72
[2026-05-11 14:33:49.620] [INFO] [AppHost] at Aspire.Hosting.Pipelines.DistributedApplicationPipeline.ExecuteStepAsync(PipelineStep step, PipelineStepContext stepContext) in /_/src/Aspire.Hosting/Pipelines/DistributedApplicationPipeline.cs:line 1137
[2026-05-11 14:33:49.620] [INFO] [AppHost] --- End of inner exception stack trace ---
[2026-05-11 14:33:49.620] [INFO] [AppHost] at Aspire.Hosting.Pipelines.DistributedApplicationPipeline.ExecuteStepAsync(PipelineStep step, PipelineStepContext stepContext) in /_/src/Aspire.Hosting/Pipelines/DistributedApplicationPipeline.cs:line 1149
[2026-05-11 14:33:49.620] [INFO] [AppHost] at Aspire.Hosting.Pipelines.DistributedApplicationPipeline.ExecuteStepsSequentially(List`1 steps, PipelineContext context) in /_/src/Aspire.Hosting/Pipelines/DistributedApplicationPipeline.cs:line 1024
[2026-05-11 14:33:49.622] [FAIL] [AppHost] Unhandled exception. System.AggregateException: One or more errors occurred. (Step 'validate-azure-container-apps' failed: Resource 'backend' is configured to publish as an Azure Container App, but there are no 'AzureContainerAppEnvironmentResource' resources. Ensure you have added one by calling 'AddAzureContainerAppEnvironment'.)
[2026-05-11 14:33:49.622] [FAIL] [AppHost] ---> System.InvalidOperationException: Step 'validate-azure-container-apps' failed: Resource 'backend' is configured to publish as an Azure Container App, but there are no 'AzureContainerAppEnvironmentResource' resources. Ensure you have added one by calling 'AddAzureContainerAppEnvironment'.
[2026-05-11 14:33:49.622] [FAIL] [AppHost] ---> System.InvalidOperationException: Resource 'backend' is configured to publish as an Azure Container App, but there are no 'AzureContainerAppEnvironmentResource' resources. Ensure you have added one by calling 'AddAzureContainerAppEnvironment'.
[2026-05-11 14:33:49.622] [FAIL] [AppHost] at Aspire.Hosting.AzureContainerAppExtensions.<>c.<AddAzureContainerAppsInfrastructureCore>b__1_2(PipelineStepContext ctx) in /_/src/Aspire.Hosting.Azure.AppContainers/AzureContainerAppExtensions.cs:line 72
[2026-05-11 14:33:49.622] [FAIL] [AppHost] at Aspire.Hosting.Pipelines.DistributedApplicationPipeline.ExecuteStepAsync(PipelineStep step, PipelineStepContext stepContext) in /_/src/Aspire.Hosting/Pipelines/DistributedApplicationPipeline.cs:line 1137
[2026-05-11 14:33:49.622] [FAIL] [AppHost] --- End of inner exception stack trace ---
[2026-05-11 14:33:49.622] [FAIL] [AppHost] at Aspire.Hosting.Pipelines.DistributedApplicationPipeline.ExecuteStepAsync(PipelineStep step, PipelineStepContext stepContext) in /_/src/Aspire.Hosting/Pipelines/DistributedApplicationPipeline.cs:line 1149
[2026-05-11 14:33:49.622] [FAIL] [AppHost] at Aspire.Hosting.Pipelines.DistributedApplicationPipeline.ExecuteStepsSequentially(List`1 steps, PipelineContext context) in /_/src/Aspire.Hosting/Pipelines/DistributedApplicationPipeline.cs:line 1024
[2026-05-11 14:33:49.622] [FAIL] [AppHost] at Aspire.Hosting.Pipelines.DistributedApplicationPipeline.ExecuteStepsSequentially(List`1 steps, PipelineContext context) in /_/src/Aspire.Hosting/Pipelines/DistributedApplicationPipeline.cs:line 1032
[2026-05-11 14:33:49.622] [FAIL] [AppHost] at Aspire.Hosting.Pipelines.DistributedApplicationPipeline.ExecuteStepsSequentially(List`1 steps, PipelineContext context) in /_/src/Aspire.Hosting/Pipelines/DistributedApplicationPipeline.cs:line 1038
[2026-05-11 14:33:49.622] [FAIL] [AppHost] at Aspire.Hosting.Pipelines.DistributedApplicationPipeline.ExecuteStepSequentiallyAsync(String stepName, PipelineContext context) in /_/src/Aspire.Hosting/Pipelines/DistributedApplicationPipeline.cs:line 617
[2026-05-11 14:33:49.622] [FAIL] [AppHost] at Aspire.Hosting.DistributedApplication.ExecuteBeforeStartHooksAsync(CancellationToken cancellationToken) in /_/src/Aspire.Hosting/DistributedApplication.cs:line 610
[2026-05-11 14:33:49.622] [FAIL] [AppHost] at Aspire.Hosting.DistributedApplication.RunAsync(CancellationToken cancellationToken) in /_/src/Aspire.Hosting/DistributedApplication.cs:line 505
[2026-05-11 14:33:49.622] [FAIL] [AppHost] --- End of inner exception stack trace ---
[2026-05-11 14:33:49.622] [FAIL] [AppHost] at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken)
[2026-05-11 14:33:49.622] [FAIL] [AppHost] at System.Threading.Tasks.Task.Wait()
[2026-05-11 14:33:49.622] [FAIL] [AppHost] at Aspire.Hosting.DistributedApplication.Run() in /_/src/Aspire.Hosting/DistributedApplication.cs:line 544
[2026-05-11 14:33:49.622] [FAIL] [AppHost] at Program.<Main>$(String[] args) in /home/UserName/reposgh/src/AppName.AppHost/Program.cs:line 442
[2026-05-11 14:33:49.696] [DBUG] [AppHostCliBackchannel] Connecting to AppHost backchannel at /home/UserName/.aspire/cli/runtime/sockets/cli.sock.3e762b3246f4 (autoReconnect=False, retryCount=20)
[2026-05-11 14:33:50.088] [DBUG] [ProcessExecutionFactory] dotnet(384754) exited with code: 134
[2026-05-11 14:33:50.088] [DBUG] [ProcessExecutionFactory] dotnet(384754) forwarders completed
[2026-05-11 14:33:50.096] [DBUG] [DotNetCliRunner] AppHost process has exited. Unable to connect to backchannel at /home/UserName/.aspire/cli/runtime/sockets/cli.sock.3e762b3246f4
System.Net.Sockets.SocketException (99): Cannot assign requested address
at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.CreateException(SocketError, Boolean) + 0x7b
at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ConnectAsync(Socket, CancellationToken) + 0xcf
at Aspire.Cli.Backchannel.AppHostCliBackchannel.<ConnectAsync>d__19.MoveNext() + 0x2cc
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine&) + 0x5a
at Aspire.Cli.Backchannel.AppHostCliBackchannel.ConnectAsync(String, Boolean, Int32, CancellationToken) + 0x51
at Aspire.Cli.DotNet.DotNetCliRunner.<StartBackchannelAsync>d__19.MoveNext() + 0x54a
at System.Threading.ExecutionContext.RunInternal(ExecutionContext, ContextCallback, Object) + 0xa7
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.AsyncStateMachineBox`1.MoveNext(Thread) + 0x63
at System.Threading.TimerQueueTimer.Fire(Boolean) + 0x4e
at System.Threading.ThreadPoolWorkQueue.Dispatch() + 0x2ff
at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart() + 0x187
at System.Threading.Thread.StartThread(IntPtr) + 0x131
at System.Threading.Thread.ThreadEntryPoint(IntPtr) + 0x19
--- End of stack trace from previous location ---
at Aspire.Cli.Backchannel.AppHostCliBackchannel.<ConnectAsync>d__19.MoveNext() + 0xea
--- End of stack trace from previous location ---
at Aspire.Cli.DotNet.DotNetCliRunner.<StartBackchannelAsync>d__19.MoveNext() + 0x284
[2026-05-11 14:33:50.096] [FAIL] [AspireCliTelemetry] An error occurred while connecting to the AppHost. The AppHost possibly crashed before it was available: AppHost process has exited unexpectedly..
Aspire.Cli.Backchannel.FailedToConnectBackchannelConnection: AppHost process has exited unexpectedly.
---> System.Net.Sockets.SocketException (99): Cannot assign requested address
at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.CreateException(SocketError, Boolean) + 0x7b
at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ConnectAsync(Socket, CancellationToken) + 0xcf
at Aspire.Cli.Backchannel.AppHostCliBackchannel.<ConnectAsync>d__19.MoveNext() + 0x2cc
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine&) + 0x5a
at Aspire.Cli.Backchannel.AppHostCliBackchannel.ConnectAsync(String, Boolean, Int32, CancellationToken) + 0x51
at Aspire.Cli.DotNet.DotNetCliRunner.<StartBackchannelAsync>d__19.MoveNext() + 0x54a
at System.Threading.ExecutionContext.RunInternal(ExecutionContext, ContextCallback, Object) + 0xa7
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.AsyncStateMachineBox`1.MoveNext(Thread) + 0x63
at System.Threading.TimerQueueTimer.Fire(Boolean) + 0x4e
at System.Threading.ThreadPoolWorkQueue.Dispatch() + 0x2ff
at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart() + 0x187
at System.Threading.Thread.StartThread(IntPtr) + 0x131
at System.Threading.Thread.ThreadEntryPoint(IntPtr) + 0x19
--- End of stack trace from previous location ---
at Aspire.Cli.Backchannel.AppHostCliBackchannel.<ConnectAsync>d__19.MoveNext() + 0xea
--- End of stack trace from previous location ---
at Aspire.Cli.DotNet.DotNetCliRunner.<StartBackchannelAsync>d__19.MoveNext() + 0x284
--- End of inner exception stack trace ---
at Aspire.Cli.Commands.RunCommand.<>c__DisplayClass21_0.<<ExecuteAsync>b__0>d.MoveNext() + 0x54
--- End of stack trace from previous location ---
at Aspire.Cli.Interaction.ConsoleInteractionService.<ShowStatusAsync>d__23`1.MoveNext() + 0x75
--- End of stack trace from previous location ---
at Aspire.Cli.Commands.RunCommand.<ExecuteAsync>d__21.MoveNext() + 0x5fb
[2026-05-11 14:33:50.096] [INFO] [Stdout] ❌ An error occurred while connecting to the AppHost. The AppHost possibly crashed before it was available: AppHost process has exited unexpectedly..
Aspire doctor output
$ aspire doctor
Aspire Environment Check
========================
.NET SDK
✅ .NET 10.0.104 installed (x64)
Container Runtime
✅ Podman v5.8.2: running (auto-detected (only runtime running)) ← active
Environment
⚠️ Multiple HTTPS development certificates found (2 certificates)
Run 'aspire certs clean' to remove all certificates, then run 'aspire certs trust' to create and trust a new one.
See: https://aka.ms/aspire-prerequisites#dev-certs
Details:
Found certificates: v6 (665029D2...) [partial], v6 (05C79CE2...). Having multiple certificates can cause confusion when selecting which one to use.
Summary: 2 passed, 1 warnings, 0 failedAnything else?
No response
[Update]
Fixed Environment Warning Multiple HTTPS development certificates without changes.
Is there an existing issue for this?
Describe the bug
After upgrading from 13.2.4 to 13.3.0 local dev using
aspire runfails to start.Expected Behavior
aspire runcontinue to work.Steps To Reproduce
The app contains multiple Azure Container App.
Local debugging is done without any Azure resources. Also I have an
AddAzureContainerAppEnvironment("appname-env")in the code.Therefore I don't understand the message:
Exceptions (if any)
[2026-05-11 14:33:48.695] [DBUG] [DotNetCliRunner] Starting backchannel connection to AppHost at /home/UserName/.aspire/cli/runtime/sockets/cli.sock.3e762b3246f4 [2026-05-11 14:33:48.695] [DBUG] [AppHostCliBackchannel] Connecting to AppHost backchannel at /home/UserName/.aspire/cli/runtime/sockets/cli.sock.3e762b3246f4 (autoReconnect=False, retryCount=0) [2026-05-11 14:33:48.703] [DBUG] [ProcessExecutionFactory] dotnet(384754) waiting for exit [2026-05-11 14:33:48.813] [INFO] [AppHost] Using launch settings from /home/UserName/reposgh/src/AppName.AppHost/Properties/launchSettings.json... [2026-05-11 14:33:49.195] [DBUG] [AppHostCliBackchannel] Connecting to AppHost backchannel at /home/UserName/.aspire/cli/runtime/sockets/cli.sock.3e762b3246f4 (autoReconnect=False, retryCount=10) [2026-05-11 14:33:49.507] [INFO] [AppHost] dbug: Aspire.Hosting.DeveloperCertificateService[0] [2026-05-11 14:33:49.507] [INFO] [AppHost] Developer certificate HTTPS/TLS termination support: True [2026-05-11 14:33:49.513] [INFO] [AppHost] dbug: Aspire.Hosting.FileSystemService[0] [2026-05-11 14:33:49.513] [INFO] [AppHost] Allocated temporary file: /tmp/aspireolr9s7/runtimeconfig.json [2026-05-11 14:33:49.620] [INFO] [AppHost] fail: Aspire.Hosting.DistributedApplication[0] [2026-05-11 14:33:49.620] [INFO] [AppHost] Step 'validate-azure-container-apps' failed. [2026-05-11 14:33:49.620] [INFO] [AppHost] System.InvalidOperationException: Step 'validate-azure-container-apps' failed: Resource 'backend' is configured to publish as an Azure Container App, but there are no 'AzureContainerAppEnvironmentResource' resources. Ensure you have added one by calling 'AddAzureContainerAppEnvironment'. [2026-05-11 14:33:49.620] [INFO] [AppHost] ---> System.InvalidOperationException: Resource 'backend' is configured to publish as an Azure Container App, but there are no 'AzureContainerAppEnvironmentResource' resources. Ensure you have added one by calling 'AddAzureContainerAppEnvironment'. [2026-05-11 14:33:49.620] [INFO] [AppHost] at Aspire.Hosting.AzureContainerAppExtensions.<>c.<AddAzureContainerAppsInfrastructureCore>b__1_2(PipelineStepContext ctx) in /_/src/Aspire.Hosting.Azure.AppContainers/AzureContainerAppExtensions.cs:line 72 [2026-05-11 14:33:49.620] [INFO] [AppHost] at Aspire.Hosting.Pipelines.DistributedApplicationPipeline.ExecuteStepAsync(PipelineStep step, PipelineStepContext stepContext) in /_/src/Aspire.Hosting/Pipelines/DistributedApplicationPipeline.cs:line 1137 [2026-05-11 14:33:49.620] [INFO] [AppHost] --- End of inner exception stack trace --- [2026-05-11 14:33:49.620] [INFO] [AppHost] at Aspire.Hosting.Pipelines.DistributedApplicationPipeline.ExecuteStepAsync(PipelineStep step, PipelineStepContext stepContext) in /_/src/Aspire.Hosting/Pipelines/DistributedApplicationPipeline.cs:line 1149 [2026-05-11 14:33:49.620] [INFO] [AppHost] at Aspire.Hosting.Pipelines.DistributedApplicationPipeline.ExecuteStepsSequentially(List`1 steps, PipelineContext context) in /_/src/Aspire.Hosting/Pipelines/DistributedApplicationPipeline.cs:line 1024 [2026-05-11 14:33:49.622] [FAIL] [AppHost] Unhandled exception. System.AggregateException: One or more errors occurred. (Step 'validate-azure-container-apps' failed: Resource 'backend' is configured to publish as an Azure Container App, but there are no 'AzureContainerAppEnvironmentResource' resources. Ensure you have added one by calling 'AddAzureContainerAppEnvironment'.) [2026-05-11 14:33:49.622] [FAIL] [AppHost] ---> System.InvalidOperationException: Step 'validate-azure-container-apps' failed: Resource 'backend' is configured to publish as an Azure Container App, but there are no 'AzureContainerAppEnvironmentResource' resources. Ensure you have added one by calling 'AddAzureContainerAppEnvironment'. [2026-05-11 14:33:49.622] [FAIL] [AppHost] ---> System.InvalidOperationException: Resource 'backend' is configured to publish as an Azure Container App, but there are no 'AzureContainerAppEnvironmentResource' resources. Ensure you have added one by calling 'AddAzureContainerAppEnvironment'. [2026-05-11 14:33:49.622] [FAIL] [AppHost] at Aspire.Hosting.AzureContainerAppExtensions.<>c.<AddAzureContainerAppsInfrastructureCore>b__1_2(PipelineStepContext ctx) in /_/src/Aspire.Hosting.Azure.AppContainers/AzureContainerAppExtensions.cs:line 72 [2026-05-11 14:33:49.622] [FAIL] [AppHost] at Aspire.Hosting.Pipelines.DistributedApplicationPipeline.ExecuteStepAsync(PipelineStep step, PipelineStepContext stepContext) in /_/src/Aspire.Hosting/Pipelines/DistributedApplicationPipeline.cs:line 1137 [2026-05-11 14:33:49.622] [FAIL] [AppHost] --- End of inner exception stack trace --- [2026-05-11 14:33:49.622] [FAIL] [AppHost] at Aspire.Hosting.Pipelines.DistributedApplicationPipeline.ExecuteStepAsync(PipelineStep step, PipelineStepContext stepContext) in /_/src/Aspire.Hosting/Pipelines/DistributedApplicationPipeline.cs:line 1149 [2026-05-11 14:33:49.622] [FAIL] [AppHost] at Aspire.Hosting.Pipelines.DistributedApplicationPipeline.ExecuteStepsSequentially(List`1 steps, PipelineContext context) in /_/src/Aspire.Hosting/Pipelines/DistributedApplicationPipeline.cs:line 1024 [2026-05-11 14:33:49.622] [FAIL] [AppHost] at Aspire.Hosting.Pipelines.DistributedApplicationPipeline.ExecuteStepsSequentially(List`1 steps, PipelineContext context) in /_/src/Aspire.Hosting/Pipelines/DistributedApplicationPipeline.cs:line 1032 [2026-05-11 14:33:49.622] [FAIL] [AppHost] at Aspire.Hosting.Pipelines.DistributedApplicationPipeline.ExecuteStepsSequentially(List`1 steps, PipelineContext context) in /_/src/Aspire.Hosting/Pipelines/DistributedApplicationPipeline.cs:line 1038 [2026-05-11 14:33:49.622] [FAIL] [AppHost] at Aspire.Hosting.Pipelines.DistributedApplicationPipeline.ExecuteStepSequentiallyAsync(String stepName, PipelineContext context) in /_/src/Aspire.Hosting/Pipelines/DistributedApplicationPipeline.cs:line 617 [2026-05-11 14:33:49.622] [FAIL] [AppHost] at Aspire.Hosting.DistributedApplication.ExecuteBeforeStartHooksAsync(CancellationToken cancellationToken) in /_/src/Aspire.Hosting/DistributedApplication.cs:line 610 [2026-05-11 14:33:49.622] [FAIL] [AppHost] at Aspire.Hosting.DistributedApplication.RunAsync(CancellationToken cancellationToken) in /_/src/Aspire.Hosting/DistributedApplication.cs:line 505 [2026-05-11 14:33:49.622] [FAIL] [AppHost] --- End of inner exception stack trace --- [2026-05-11 14:33:49.622] [FAIL] [AppHost] at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken) [2026-05-11 14:33:49.622] [FAIL] [AppHost] at System.Threading.Tasks.Task.Wait() [2026-05-11 14:33:49.622] [FAIL] [AppHost] at Aspire.Hosting.DistributedApplication.Run() in /_/src/Aspire.Hosting/DistributedApplication.cs:line 544 [2026-05-11 14:33:49.622] [FAIL] [AppHost] at Program.<Main>$(String[] args) in /home/UserName/reposgh/src/AppName.AppHost/Program.cs:line 442 [2026-05-11 14:33:49.696] [DBUG] [AppHostCliBackchannel] Connecting to AppHost backchannel at /home/UserName/.aspire/cli/runtime/sockets/cli.sock.3e762b3246f4 (autoReconnect=False, retryCount=20) [2026-05-11 14:33:50.088] [DBUG] [ProcessExecutionFactory] dotnet(384754) exited with code: 134 [2026-05-11 14:33:50.088] [DBUG] [ProcessExecutionFactory] dotnet(384754) forwarders completed [2026-05-11 14:33:50.096] [DBUG] [DotNetCliRunner] AppHost process has exited. Unable to connect to backchannel at /home/UserName/.aspire/cli/runtime/sockets/cli.sock.3e762b3246f4 System.Net.Sockets.SocketException (99): Cannot assign requested address at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.CreateException(SocketError, Boolean) + 0x7b at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ConnectAsync(Socket, CancellationToken) + 0xcf at Aspire.Cli.Backchannel.AppHostCliBackchannel.<ConnectAsync>d__19.MoveNext() + 0x2cc at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine&) + 0x5a at Aspire.Cli.Backchannel.AppHostCliBackchannel.ConnectAsync(String, Boolean, Int32, CancellationToken) + 0x51 at Aspire.Cli.DotNet.DotNetCliRunner.<StartBackchannelAsync>d__19.MoveNext() + 0x54a at System.Threading.ExecutionContext.RunInternal(ExecutionContext, ContextCallback, Object) + 0xa7 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.AsyncStateMachineBox`1.MoveNext(Thread) + 0x63 at System.Threading.TimerQueueTimer.Fire(Boolean) + 0x4e at System.Threading.ThreadPoolWorkQueue.Dispatch() + 0x2ff at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart() + 0x187 at System.Threading.Thread.StartThread(IntPtr) + 0x131 at System.Threading.Thread.ThreadEntryPoint(IntPtr) + 0x19 --- End of stack trace from previous location --- at Aspire.Cli.Backchannel.AppHostCliBackchannel.<ConnectAsync>d__19.MoveNext() + 0xea --- End of stack trace from previous location --- at Aspire.Cli.DotNet.DotNetCliRunner.<StartBackchannelAsync>d__19.MoveNext() + 0x284 [2026-05-11 14:33:50.096] [FAIL] [AspireCliTelemetry] An error occurred while connecting to the AppHost. The AppHost possibly crashed before it was available: AppHost process has exited unexpectedly.. Aspire.Cli.Backchannel.FailedToConnectBackchannelConnection: AppHost process has exited unexpectedly. ---> System.Net.Sockets.SocketException (99): Cannot assign requested address at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.CreateException(SocketError, Boolean) + 0x7b at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ConnectAsync(Socket, CancellationToken) + 0xcf at Aspire.Cli.Backchannel.AppHostCliBackchannel.<ConnectAsync>d__19.MoveNext() + 0x2cc at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine&) + 0x5a at Aspire.Cli.Backchannel.AppHostCliBackchannel.ConnectAsync(String, Boolean, Int32, CancellationToken) + 0x51 at Aspire.Cli.DotNet.DotNetCliRunner.<StartBackchannelAsync>d__19.MoveNext() + 0x54a at System.Threading.ExecutionContext.RunInternal(ExecutionContext, ContextCallback, Object) + 0xa7 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.AsyncStateMachineBox`1.MoveNext(Thread) + 0x63 at System.Threading.TimerQueueTimer.Fire(Boolean) + 0x4e at System.Threading.ThreadPoolWorkQueue.Dispatch() + 0x2ff at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart() + 0x187 at System.Threading.Thread.StartThread(IntPtr) + 0x131 at System.Threading.Thread.ThreadEntryPoint(IntPtr) + 0x19 --- End of stack trace from previous location --- at Aspire.Cli.Backchannel.AppHostCliBackchannel.<ConnectAsync>d__19.MoveNext() + 0xea --- End of stack trace from previous location --- at Aspire.Cli.DotNet.DotNetCliRunner.<StartBackchannelAsync>d__19.MoveNext() + 0x284 --- End of inner exception stack trace --- at Aspire.Cli.Commands.RunCommand.<>c__DisplayClass21_0.<<ExecuteAsync>b__0>d.MoveNext() + 0x54 --- End of stack trace from previous location --- at Aspire.Cli.Interaction.ConsoleInteractionService.<ShowStatusAsync>d__23`1.MoveNext() + 0x75 --- End of stack trace from previous location --- at Aspire.Cli.Commands.RunCommand.<ExecuteAsync>d__21.MoveNext() + 0x5fb [2026-05-11 14:33:50.096] [INFO] [Stdout] ❌ An error occurred while connecting to the AppHost. The AppHost possibly crashed before it was available: AppHost process has exited unexpectedly..Aspire doctor output
$ aspire doctor Aspire Environment Check ======================== .NET SDK ✅ .NET 10.0.104 installed (x64) Container Runtime ✅ Podman v5.8.2: running (auto-detected (only runtime running)) ← active Environment ⚠️ Multiple HTTPS development certificates found (2 certificates) Run 'aspire certs clean' to remove all certificates, then run 'aspire certs trust' to create and trust a new one. See: https://aka.ms/aspire-prerequisites#dev-certs Details: Found certificates: v6 (665029D2...) [partial], v6 (05C79CE2...). Having multiple certificates can cause confusion when selecting which one to use. Summary: 2 passed, 1 warnings, 0 failedAnything else?
No response
[Update]
Fixed Environment Warning
Multiple HTTPS development certificateswithout changes.