Hi, Can you please download .NET Core 3.1.401 , then install it, perform the registration of those two files again and see if it works? Best regards, Eusebiu C:\Program Files (x86)\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.8 Tools>gacutil -i "c:\Program Files\dotnet\sdk\3.1.401\Sdks\Microsoft....