Visual-studio – Visual Studio error “Object reference not set to an instance of an object” after install of ASP.NET and Web Tools 2015

asp.netvisual studio

After installing the ASP.NET and Web Tools 2015 (RC1 update 1) I get the following error within ASP.NET MVC 4 projects when opening *.cshtml files:

Object reference not set to instance of an object

Enter image description here

I get the same error message even if I start a new ASP.NET MVC 4 project and try to open a *.cshtml file there.

I'm using Visual Studio 2015

Best Answer

Maybe this helps:

  1. Delete the contents from the following folders:
    1. C:\Users\%userprofile%\AppData\Local\Microsoft\VisualStudio
    2. C:\Users\%userprofile%\AppData\Local\Microsoft\VSCommon
  2. Sometimes, you need to go to:
    1. [x64] C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE
    2. [x86] C:\Program Files\Microsoft Visual Studio 14.0\Common7\IDE

and run devenv /resetuserdata.

Expect, that all of your user settings such as Visual Studio layout, linked Microsoft account or start page might disappear.

Related Topic