Register .NET 4.0.x
From Command Prompt, navigate to .NET directory register:
%windir%\Microsoft.NET\Framework\v4.0.x\aspnet_regiis.exe -ir
%windir%\Microsoft.NET\Framework(64)\v4.0.x\aspnet_regiis.exe -ir
E.g
C:\Windows\Microsoft.NET\Framework\v4.0.30319
C:\Windows\Microsoft.NET\Framework64\v4.0.30319
