'installutin does not recognized as an intenal or external command'
You need to navigate to the path where installutil.exe is present.
By default it is:
C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727
considering, C drive is your system drive.
So type
cd C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727
before you use the command.
If you still have issues, Google for "installutil.exe"
Hope it helps! :thumbsup: