This is an unhandled exception in MSBuild -- PLEASE UPVOTE AN EXISTING ISSUE OR FILE A NEW ONE AT https://aka.ms/msbuild/unhandled.

Question

Hi I am getting this error when I build my project,

This is an unhandled exception in MSBuild -- PLEASE UPVOTE AN EXISTING ISSUE OR FILE A NEW ONE AT https://aka.ms/msbuild/unhandled.

(0,0): error : This is an unhandled exception in MSBuild -- PLEASE UPVOTE AN EXISTING ISSUE OR FILE A NEW ONE AT https://aka.ms/msbuild/unhandled.
System.InvalidOperationException: Could not load file or assembly 'System.Memory, Version=4.0.1.1, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' or one of its dependencies. The system cannot find the file specified. ---> System.IO.FileNotFoundException: Could not load file or assembly 'System.Memory, Version=4.0.1.1, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' or one of its dependencies. The system cannot find the file specified.

How can I fix this issue?

Answer 1

Check in the GAC to see if the system.memory assembly is in there.

   gacutil /l "System.Memory"  

If it is then remove it.

   gacutil /u "System.Memory"  

Answer 2

I get some error. After updating visual studio 2022 enterprise 17.5.3 to 17.5.4.

Could not load file or assembly 'System.Memory, Version=4.0.1.1, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' or one of its dependencies. The system cannot find the file specified.

   at Microsoft.AspNetCore.WebUtilities.QueryHelpers.AddQueryString(String uri, IEnumerable`1 queryString)
   at RestUtils.CdmRestClient.GetFromUrl[TResult](String service, String method, Dictionary`2 urlArgs) in C:\work