Reinstall .NET Framework on Windows 8?

Question

After uninstall a Visual Studio plugin(ANTS profiler) I get exceptions like :

UnauthorizedAccessException occured Access to the path 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\~AspAccessCheck_7d9f07e52084.tmp' is denied.

In Windows 7 i would try to run the asp_regiis to fix this but this is not possible in Windows. I have tried to set the ASP.NET folder to NOT read only but that does not fix the problem.

I have tried unactivate/activate the feutures in controlpanel but that does not really remove and reinstall .NET framework becouse it is infact a core part.

If its not possible to uninstall/install, is there any way to repair .NET or will I have to reinstall the entire OS for this?

Not that impressed with the ANTS software

Edit 1 :

It is not possible to change the Permission on the framework folder. Also its a 64 bits verson of Windows 8, should it not use Framework64 instead of Framework?

Edit 2 : Windows have not saved any recover point more then the one today. The Ants virus was installed yesterday, so no luck there eather.

Answer 1

Reinstallation was the only working soultion.

Answer 2

To repair inbox components like .net 4.5 or other Windows files, run this DISM command from a cmd prompt which is started as admin:

DISM /Online /Cleanup-Image /RestoreHealth

Answer 3

You tried to download and reinstall .netFramework?

http://www.microsoft.com/en-us/download/details.aspx?id=30653