BadImageFormatException error in using InstallUtil tool

Question

I have created and compiled my windows service using .NET 4.0 So I go to .NET 4.0 folder and say something like this: I copied the bin folder to C drive to make path shorter:

InstallUtil.exe "C:\bin\Debug\MyTestService.exe"

and this is the error I get:

Exception occurred while initializing the installation: System.BadImageFormatException: Could not load file or assembly 'file:///C:\bin Debug\MyTestService.exe' or one of its dependencies. An attempt was made to load a program with an incorrect format..

So I don't know what to do.

Answer 1

That error happens when you use the wrong version of installutil. For instance, you are using installutil.exe for .NET 2.0 but your target exe is built with 4.0 or you are using a 32 bit version of installutil on a 64 bit dll/exe.