Could not load file or assembly \'Microsoft.VisualStudio.Web.PageInspector.Loader, Version=1.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a\' or one of its depen
it solved the problem on at my end by applying the approved solution in this thread.
modifying the following two files, and removing Microsoft.VisualStudio.Web.PageInspector.Loader
resolved the issue.
C:\Windows\Microsoft.NET\Framework\v4.0.30319\Config\web.config
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Config\web.config
No need to remove those lines
Just close and reopen the Visual studio with Admin privileges.