Error in Visual Studio 2015 When Add New WebForm

Question

When I add new WebForm to my project, I get the following error:

Could not load file or assembly \'Microsoft.VisualStudio.JSLS,Vers

Answer 1

Remove the update received for visual studio TypeScript on 11/08/2015. it seems to be buggy. After removing TypeScript update, my VS is working fine ;-)

and if you try to reinstall x:\packages\JavaScript_LanguageService\JavaScript_LanguageService.msi from the installation package, soon or later you will face one more problem that "Something went wrong.. may be because of a extension.." Easiest way is to remove TypeScript update for now. TypeScript future update may fix the problem.

OR

1. Run command prompt as administrator.
2. CD C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE
3. devenv /updateconfiguration
4. devenv /clearcache