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Today I updated Visual Studio to 17.4.0 Preview 2.1.

Microsoft Visual Studio Community 2022 (64-bit) - Preview Version 17.4.0 Preview 2.1

After that, I can't deploy my Blazor application because I got this error:

To build this project, the following workloads must be installed: wasm-tools-net6 To install these workloads, run the following command: dotnet workload restore

I ran the command but nothing changed.

enter image description here

How can I fix it?

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  • 1
    try "dotnet workload restore --interactive" Commented Dec 13, 2022 at 13:28
  • I tried this command and it installed NET7 but my application is in NET6 Commented Dec 13, 2022 at 18:42

5 Answers 5

Reset to default
8

I got this working by installing .NET WebAssembly Build Tools with the Visual Studio Installer:

enter image description here

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Having done that, I still had to run "dotnet workload restore", then it worked.
4

This was hiding other errors for me.

Still, I was forced to install the correct NET workload to discover the real errors. In my case, I was targeting NET7, so I ran the following in the Package Manager Console (from the top menu: View > Other Windows > Package Manager Console):

dotnet workload install wasm-tools-net7

just change it to net6 if you target NET6.

After that, I still was seeing the same error: enter image description here

Then, I ran Clean and then Rebuild commands (right click solution -> Clean, then Rebuild Solution). After this last step, the real errors appeared:

enter image description here

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2

I just ran into this problem as well after updating a few projects to .Net 7. I found that the problem related to the Target Framework, and Target Location of the publish profile. Once I upgraded these from .Net6 to .Net7 publishing worked again for me. enter image description here

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you can run this command: dotnet workload install wasm-tools-net6
2

dotnet workload restore --interactive then restarting Visual Studio fixed it for me

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0

For me (after trying all above answers and still having the same problem) it worked to untick the Ahead-of-time (AOT) compilation:

  1. From the main menu: Build -> Publish [myProject] -> Show all settings -> File Publish Options
  2. Untick Ahead-of-time (AOT) compilation

For me (after trying all above answers and still having the same problem) it worked to untick the Ahead-of-time (AOT) compilation:

  1. From the main menu: Build -> Publish [myProject] -> Show all settings -> File Publish Options
  2. Untick Ahead-of-time (AOT) compilation

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