I installed Visual Studio 2019 enterprise. In the middle of the installation I noticed that the installation got stuck on a process called Microsoft.Build.UnGAC.exe. The installation did not proceed and I had to stop this process. After stopping the process the installation progressed and it finished but I got this error message: Could not install Microsoft.Build.UnGAC.exe After that I tried to open VS 2019 and I got this message --------------------------- Microsoft Visual Studio --------------------------- The 'Visual Studio Build Manager Package' package did not load correctly. The problem may have been caused by a configuration change or by the installation of another extension. You can get more information by examining the file '%userprofile% \ AppData \ Roaming \ Microsoft \ VisualStudio \ 16.0_4941b04c \ ActivityLog.xml'. Restarting Visual Studio could help resolve this issue. Continue to show this error message? --------------------------- Yes No --------------------------- I open my project but I couldn't compile anything.