installutil.exe is not a valid win32 application

Question

When I try to install service using Installutil.exe I receive a message c:\windows\Microsoft.net\framework\v4.0.30319\Installutil.exe is not a valid Win32 application.

Answer 1

I found out that for some reason the InstallUtil got corrupted during installation and got 0 byte size. So replacing that executable with correct size one - should fix the issue.

Answer 2

I had the same problem. finally like I'm on 64 bit OS, I used the "Framework64" directory instead of the "Framework" directory (C: \ Windows \ Microsoft.NET \ ramework64 \ v4.0.30319> installutil.exe ......) and then it work.