visual studio 2022 will not launch gives a JSON_RPC connection erro

Question

I installed Visual Studio 2022 a week ago and it worked for 1 day. It then started to go give the following error when I launched it;

'could not start visual studio due to an error. streamJsonRpc.ConnectionLostException. The JSON_RPC connection with the remote party was lost before the reuqest could compelete.'

I removed all VPN's, virus protection software, old Visual Studios files etc. I have repaired/reinstalled Visual Studio svereal times but still get the same message. Any suggestions would be welcom

Answer 1

Hi @ken muir , 

Welcome to Microsoft Q&A! 

Please go to %userappdata%\temp\servicehub\logs and check the generated logs.

Like this:

Error : Exception: System.IO.FileLoadException: Could not load file or assembly 'System.Numerics.Vectors, Version=4.1.3.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

 

You can close all running VS instances and try editing your config files. 

1. Go to C:\Program Files\Microsoft Visual Studio\2022\version\Common7\IDE and edit the devenv.exe.config file:

<dependentAssembly>
          <assemblyIdentity name="System.Numerics.Vectors" publicKeyToken="b03f5f7f11d50a3a" culture="neutral"/>
          <bindingRedirect oldVersion="0.0.0.0-4.1.4.0" newVersion="4.1.4.0" />
        </dependentAssembly>

2. Go to C:\Program Files\Microsoft Visual Studio\2022\version\Common7\ServiceHub\Services\Microsoft.Developer.IdentityService and edit Microsoft.Developer.IdentityService.dll.config file:

<dependentAssembly>
        <assemblyIdentity name="System.Numerics.Vectors" culture="neutral" publicKeyToken="b03f5f7f11d50a3a" />
        <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" />
      </dependentAssembly>

3. If it doesn’t work, please try to remove the older version of System.Memory.dll in the GAC via an elevated Developer Command Prompt for VS 2022:

gacutil /u "System.Memory, Version=4.0.1.1"

Sincerely,

Anna

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