Blazor WASM in VS2022 not work with 7.0.8

[TFreudi1]

I have a Blazor WASM project where I just upgraded via nuget Microsoft.AspNetCore.Components.WebAssembly, Microsoft.AspNetCore.Components.WebAssembly.DevServer from Version 7.0.7 to 7.0.8. With that I can't debug anymore, when downgrade both packages to 7.0.7 everything works.
I use latest VS2022 17.6.4.
The errormessagebox says "Process with an ID ... is not running."

The DOS Box says:
You must install or update .NET to run this application.

App: C:\Users\thomasf.FREUDI7.nuget\packages\microsoft.aspnetcore.components.webassembly.devserver\7.0.8\tools\blazor-devserver.dll
Architecture: x64
Framework: 'Microsoft.AspNetCore.App', version '7.0.8' (x64)
.NET location: C:\Program Files\dotnet\

The following frameworks were found:
2.1.2 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.13 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.15 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.16 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.17 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.18 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.19 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.20 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.21 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.22 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.23 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.24 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.27 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.30 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
3.1.3 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
3.1.13 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
3.1.14 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
3.1.15 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
3.1.30 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
3.1.31 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
3.1.32 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
5.0.4 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
5.0.6 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
5.0.9 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
5.0.17 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
6.0.5 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
6.0.10 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
6.0.11 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
6.0.13 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
6.0.18 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
7.0.7 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]

Learn about framework resolution:
https://aka.ms/dotnet/app-launch-failed

To install missing framework, download:
https://aka.ms/dotnet-core-applaunch?framework=Microsoft.AspNetCore.App&framework_version=7.0.8&arch=x64&rid=win10-x64

C:\Program Files\dotnet\dotnet.exe (Prozess "14404") wurde mit Code "-2147450730" beendet.
Um die Konsole beim Beenden des Debuggens automatisch zu schließen, aktivieren Sie "Extras" > "Optionen" > "Debuggen" > "Konsole beim Beenden des Debuggings automatisch schließen".
Drücken Sie eine beliebige Taste, um dieses Fenster zu schließen.

[fredjc13]

This worked for me also!!

[TFreudi1]

For me it don't work on 3 different computers. 2 times Win 11, 1 Win10, all with VS2022 17.6.4

[janhjordie]

Same issue for me as well. Also updated to .NET 7.0.8, but that did not work.
Downgrade to 7.0.7 is the only way for now !

[afumfer]

I have the same problem with .net 7.0.8. I have also downgraded the version to 7.0.7.

[mkArtakMSFT]

Ping @thaystg

[thaystg]

Can you please try to install the SDK 7.0.8?
https://dotnet.microsoft.com/en-us/download/dotnet/7.0

[thaystg]

Also can you test if it works if you start without debugging?

[TFreudi1]

Also can you test if it works if you start without debugging?

That don't work, same error. I also trying to switch Release Mode and than STRG-F5, same error.

[TFreudi1]

Can you please try to install the SDK 7.0.8? https://dotnet.microsoft.com/en-us/download/dotnet/7.0

I will, but the last time I tried installing a NET SDK separate from the VS2022 installer I later ended up in completly removing VS2022, executing cleaning scripts .... I will install a VM and try that for you, but it needs some time.

[afumfer]

My Blazor WebAssembly projects with ASP.NET Core Hosted, .NET 7.0.8 and Visual Studio 17.6.4 all work fine.
But in my standalone Blazor WebAssembly projects with .NET 7.0.8 this error persists. It doesn't work without debugging nor release mode. For it to work I have to downgrade to version 7.0.7.

[DuckScapePhilip]

I am on 17.6.4 (VS2022) and .NET 7.0.8 and had the same issue. I downloaded the 7.0.8 hosting bundle and it worked after that. Must be missing from the 17.6.4 update or something.

[ghost]

Tagging subscribers to 'arch-wasm': @lewing
See info in area-owners.md if you want to be subscribed.

Issue Details

---

I have a Blazor WASM project where I just upgraded via nuget Microsoft.AspNetCore.Components.WebAssembly, Microsoft.AspNetCore.Components.WebAssembly.DevServer from Version 7.0.7 to 7.0.8. With that I can't debug anymore, when downgrade both packages to 7.0.7 everything works.
I use latest VS2022 17.6.4.
The errormessagebox says "Process with an ID ... is not running."

The DOS Box says:
You must install or update .NET to run this application.

App: C:\Users\thomasf.FREUDI7.nuget\packages\microsoft.aspnetcore.components.webassembly.devserver\7.0.8\tools\blazor-devserver.dll
Architecture: x64
Framework: 'Microsoft.AspNetCore.App', version '7.0.8' (x64)
.NET location: C:\Program Files\dotnet\

The following frameworks were found:
2.1.2 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.13 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.15 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.16 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.17 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.18 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.19 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.20 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.21 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.22 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.23 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.24 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.27 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
2.1.30 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
3.1.3 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
3.1.13 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
3.1.14 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
3.1.15 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
3.1.30 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
3.1.31 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
3.1.32 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
5.0.4 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
5.0.6 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
5.0.9 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
5.0.17 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
6.0.5 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
6.0.10 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
6.0.11 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
6.0.13 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
6.0.18 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
7.0.7 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]

Learn about framework resolution:
https://aka.ms/dotnet/app-launch-failed

To install missing framework, download:
https://aka.ms/dotnet-core-applaunch?framework=Microsoft.AspNetCore.App&framework_version=7.0.8&arch=x64&rid=win10-x64

C:\Program Files\dotnet\dotnet.exe (Prozess "14404") wurde mit Code "-2147450730" beendet.
Um die Konsole beim Beenden des Debuggens automatisch zu schließen, aktivieren Sie "Extras" > "Optionen" > "Debuggen" > "Konsole beim Beenden des Debuggings automatisch schließen".
Drücken Sie eine beliebige Taste, um dieses Fenster zu schließen.

Author:	TFreudi1
Assignees:	-
Labels:	arch-wasm, untriaged, area-Debugger-mono
Milestone:	-

[thaystg]

@mkArtakMSFT can you help us to assign it to the right person?

[mkArtakMSFT]

@mkArtakMSFT can you help us to assign it to the right person?

Thanks @thaystg. I'll get someone to look into this later this week.

[lewing]

simliar issue to #88391

[thaystg]

This is the expected behavior, if you want to use the 7.0.8 Microsoft.AspNetCore.Components.WebAssembly.DevServer package you need to use the 7.0.8 or earlier runtime version.
This is because the blazor-devserver.runtimeconfig.json is configured like this: https://github.com/dotnet/aspnetcore/blob/f9828517e57769959d43c89d06ad7f319880258c/src/Components/WebAssembly/DevServer/src/blazor-devserver.runtimeconfig.json.in#L6

This is the runtimeconfig of the 7.0.8 nuget package.

[thaystg]

Also VS 17.6.4 installs dotnet 7.0.7, VS 17.6.5 installs dotnet 7.0.8.