Asp.net 4.0 has not been registered

visual-studio-2010 iis visual-studio-2012 iis-7 windows-8.1
user228777 picture user228777 · Apr 29, 2011 · Viewed 209.4k times · Source

When I try to open my Visual Studio project I get the following error:

Asp.Net has not been registered on the webserver you need to manually configure your webserver for Asp.net 4.0.

Update:
Nevermind I fixed it:

I just repaired .Net Framework 4.0 and the issue was resolved.

Answer

sharpper picture sharpper · Jul 30, 2011

I also fixed this issue by running

aspnet_regiis -i

using the visual studio command line tools as an administrator

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