Doesn't compile with the new version of Visual Studio

[vsfeedback]

This issue has been moved from a ticket on Developer Community.

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[regression] [worked-in:Version 17.14.7]
Hola! Actualice mi visual studio y mi código fuente dejo de compilar, tuve que devolver la version del visual studio, a continuación dejo mi error:

The "DefineStaticWebAssetEndpoints" task failed unexpectedly.

System.AggregateException: One or more errors occurred. ---> System.InvalidOperationException: Last write time for '\Projects\Carpeta_Raiz\Proyecto.Blazor.Server\wwwroot\css\site.css' is not defined.

at Microsoft.AspNetCore.StaticWebAssets.Tasks.StaticWebAsset.Validate()

at Microsoft.AspNetCore.StaticWebAssets.Tasks.StaticWebAsset.FromTaskItem(ITaskItem item)

at Microsoft.AspNetCore.StaticWebAssets.Tasks.DefineStaticWebAssetEndpoints.ParallelWorker.Process(Int32 i, ParallelLoopState _)

at Microsoft.AspNetCore.StaticWebAssets.Tasks.DefineStaticWebAssetEndpoints.<>c.<Execute>b__16_2(Int32 i, ParallelLoopState loop, ParallelWorker state)

at System.Threading.Tasks.Parallel.<>c__DisplayClass17_0`1. <ForWorker>b__1()

at System.Threading.Tasks.Task.InnerInvokeWithArg(Task childTask)

at System.Threading.Tasks.Task.<>c__DisplayClass176_0. <ExecuteSelfReplicating>b__0(Object <p0>)

--- End of inner exception stack trace ---

at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)

at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken)

at System.Threading.Tasks.Parallel.ForWorker[TLocal](Int32 fromInclusive, Int32 toExclusive, ParallelOptions parallelOptions, Action1 body, Action2 bodyWithState, Func4 bodyWithLocal, Func1 localInit, Action`1 localFinally)

at System.Threading.Tasks.Parallel.For[TLocal](Int32 fromInclusive, Int32 toExclusive, Func1 localInit, Func4 body, Action`1 localFinally)

at Microsoft.AspNetCore.StaticWebAssets.Tasks.DefineStaticWebAssetEndpoints.Execute()

at Microsoft.Build.BackEnd.TaskExecutionHost.Execute()

at Microsoft.Build.BackEnd.TaskBuilder. <ExecuteInstantiatedTask>d__26.MoveNext()

---> (Inner Exception #0) System.InvalidOperationException: Last write time for 'Projects\Proyecto_Raiz\Proyecto.Blazor.Server\wwwroot\css\site.css' is not defined.

at Microsoft.AspNetCore.StaticWebAssets.Tasks.StaticWebAsset.Validate()

at Microsoft.AspNetCore.StaticWebAssets.Tasks.StaticWebAsset.FromTaskItem(ITaskItem item)

at Microsoft.AspNetCore.StaticWebAssets.Tasks.DefineStaticWebAssetEndpoints.ParallelWorker.Process(Int32 i, ParallelLoopState _)

at Microsoft.AspNetCore.StaticWebAssets.Tasks.DefineStaticWebAssetEndpoints.<>c.<Execute>b__16_2(Int32 i, ParallelLoopState loop, ParallelWorker state)

at System.Threading.Tasks.Parallel.<>c__DisplayClass17_0`1. <ForWorker>b__1()

at System.Threading.Tasks.Task.InnerInvokeWithArg(Task childTask)

at System.Threading.Tasks.Task.<>c__DisplayClass176_0. <ExecuteSelfReplicating>b__0(Object <p0>)<---

---> (Inner Exception #1) System.InvalidOperationException: Last write time for 'C:\Projects\Proyecto_Raiz\Proyecto.Blazor.Server\wwwroot\images\SplashScreen.svg' is not defined.

at Microsoft.AspNetCore.StaticWebAssets.Tasks.StaticWebAsset.Validate()

at Microsoft.AspNetCore.StaticWebAssets.Tasks.StaticWebAsset.FromTaskItem(ITaskItem item)

at Microsoft.AspNetCore.StaticWebAssets.Tasks.DefineStaticWebAssetEndpoints.ParallelWorker.Process(Int32 i, ParallelLoopState _)

at Microsoft.AspNetCore.StaticWebAssets.Tasks.DefineStaticWebAssetEndpoints.<>c.<Execute>b__16_2(Int32 i, ParallelLoopState loop, ParallelWorker state)

at System.Threading.Tasks.Parallel.<>c__DisplayClass17_0`1. <ForWorker>b__1()

at System.Threading.Tasks.Task.InnerInvokeWithArg(Task childTask)

at System.Threading.Tasks.Task.<>c__DisplayClass176_0. <ExecuteSelfReplicating>b__0(Object <p0>)<---

---> (Inner Exception #2) System.InvalidOperationException: Last write time for 'C:\Projects\Proyecto_Raiz\Proyecto.Blazor.Server\wwwroot\favicon.ico' is not defined.

at Microsoft.AspNetCore.StaticWebAssets.Tasks.StaticWebAsset.Validate()

at Microsoft.AspNetCore.StaticWebAssets.Tasks.StaticWebAsset.FromTaskItem(ITaskItem item)

at Microsoft.AspNetCore.StaticWebAssets.Tasks.DefineStaticWebAssetEndpoints.ParallelWorker.Process(Int32 i, ParallelLoopState _)

at Microsoft.AspNetCore.StaticWebAssets.Tasks.DefineStaticWebAssetEndpoints.<>c.<Execute>b__16_2(Int32 i, ParallelLoopState loop, ParallelWorker state)

at System.Threading.Tasks.Parallel.<>c__DisplayClass17_0`1. <ForWorker>b__1()

at System.Threading.Tasks.Task.InnerInvokeWithArg(Task childTask)

at System.Threading.Tasks.Task.<>c__DisplayClass176_0. <ExecuteSelfReplicating>b__0(Object <p0>)<---

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Original Comments

Feedback Bot on 7/7/2025, 08:48 AM:

We have directed your feedback to the appropriate engineering team for further evaluation. The team will review the feedback and notify you about the next steps.

[javiercn]

Thanks for contacting us.

We believe this issue has been addressed as part of 9.0.302 release of the SDK, could you update to that version and let us know if you are still having problems?

[dotnet-policy-service]

Hi @@vsfeedback. We have added the "Needs: Author Feedback" label to this issue, which indicates that we have an open question for you before we can take further action. This issue will be closed automatically in 7 days if we do not hear back from you by then - please feel free to re-open it if you come back to this issue after that time.

[javiercn]

Dupe against dotnet/sdk#49039