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.
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.
It was built in VisualStudio with "AnyCPU", but I was using X64 version of Install util, I changed it to explicit say built it for X64 machine and got rid of that error. However now it is saying some other error but this error gets solved.
I set is as AnyCPU for both 32bit and 64 bit setups. It worked.
来源：https://stackoverflow.com/questions/11059284/badimageformatexception-error-in-using-installutil-tool