“Value does not fall within the expected range” when trying to add a reference in a project

Question

Suddenly I am getting this error \"Value does not fall within the expected range\" whenever I try to add a reference to any project. This also happens with a new blank proje

Answer 1

I did a 'devenv /setup' and that fixed it.

Detail

• Exit Visual Studio
• Click Start
• Type cmd, right click Command Prompt and select Run as administrator

• Navigate to the appropriate Visual Studio folder
  VS2012: pushd %programfiles(x86)%\Microsoft Visual Studio 12.0\Common7\IDE
  VS2015: pushd %programfiles(x86)%\Microsoft Visual Studio 14.0\Common7\IDE
  VS2017: pushd %programfiles(x86)%\Microsoft Visual Studio\2017\\Common7\IDE
  VS2019: pushd %programfiles(x86)%\Microsoft Visual Studio\2019\\Common7\IDE
  

• Type devenv /setup and press enter

• When the command prompt returns, you're done. Close the command window, reopen Visual Studio, and test to see if the error's resolved.

More Information

https://msdn.microsoft.com/en-us/library/ex6a2fad.aspx