Upgrading "aspire" workload causes builds to fail until Visual Studio is restarted

[KalleOlaviNiemitalo]

Describe the bug

I had a solution open in Visual Studio 2022 when I ran "dotnet workload update" on the command line, which upgraded the "aspire" workload from 8.0.1 to 8.0.2. After this, when I tried to build a project in Visual Studio, it failed with an error saying that Microsoft.NET.Sdk.ImportWorkloads.props was not able to import AutoImport.props from version 8.0.1 of Aspire.

Nothing in the solution references Aspire.

I tried to restore NuGet packages again in Visual Studio, and also with nuget restore -force -forceEvaluate, but it didn't help. I then restarted Visual Studio, and the build started working again.

The problem seems to be that Microsoft.NET.Sdk.WorkloadMSBuildSdkResolver.CachingWorkloadResolver assumes Visual Studio will be restarted when workloads are updated. The "dotnet workload update" command did not restart Visual Studio and did not tell me to restart it.

To Reproduce

I can't reproduce it now, as I can't figure out how to reinstall version 8.0.1 of the "aspire" workload for .NET SDK 8.

This may be related to me having installed .NET SDK 8 and the "aspire" workload long before I installed Visual Studio 2022.

Exceptions (if any)

I lost the error message.

Further technical details

As I've uninstalled and reinstalled various SDK versions and workloads while trying to reproduce the error, the following output of dotnet --info no longer matches what it would have been when the error occurred. In particular, I don't think the "Installation Source" of "aspire" would have been VS.

$ dotnet --info
.NET SDK:
 Version:           8.0.302
 Commit:            ef14e02af8
 Workload version:  8.0.300-manifests.ca8b4b2d
 MSBuild version:   17.10.4+10fbfbf2e

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.19045
 OS Platform: Windows
 RID:         win-x64
 Base Path:   C:\Program Files\dotnet\sdk\8.0.302\

.NET workloads installed:
 [aspire]
   Installation Source: VS 17.10.35013.160
   Manifest Version:    8.0.0/8.0.100
   Manifest Path:       C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.sdk.aspire\8.0.0\WorkloadManifest.json
   Install Type:        FileBased


Host:
  Version:      9.0.0-preview.5.24306.7
  Architecture: x64
  Commit:       a5cc707d97

.NET SDKs installed:
  2.1.526 [C:\Program Files\dotnet\sdk]
  6.0.423 [C:\Program Files\dotnet\sdk]
  8.0.302 [C:\Program Files\dotnet\sdk]
  9.0.100-preview.5.24307.3 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.All 2.1.30 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.App 2.1.30 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 6.0.31 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 8.0.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 9.0.0-preview.5.24306.11 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 2.1.30 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 6.0.2 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 6.0.31 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 8.0.6 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 9.0.0-preview.5.24306.7 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.WindowsDesktop.App 6.0.2 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 6.0.31 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 8.0.6 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 9.0.0-preview.5.24306.8 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Other architectures found:
  x86   [C:\Program Files (x86)\dotnet]
    registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation]

Environment variables:
  Not set

global.json file:
  [REDACTED]\global.json

Learn more:
  https://aka.ms/dotnet/info

Download .NET:
  https://aka.ms/dotnet/download

Visual Studio Professional 2022 LTSC 17.10 on Windows 10 x64.