NuGet staying 'Retrieving Information' or 'No results found' in VS 2013

Question

All of a sudden, NuGet stopped working for all projects. I\'ve tried it on 4 different computers in the office, and all of them stopped working.

If I go to \'Manage

Answer 1

I started the VS with /Log parameter and in file %APPDATA%\Roaming\Microsoft\VisualStudio\12.0\ActivityLog.xml there was a record that packages\repositories.config was read-only. So, I checked it out, and it worked.