Friday, August 15, 2014

System.BadImageFormatException: Could not load file or assembly(Windows service)

Recently I have created a windows service and I wanted to to install that service to the my QA server.for that I used InstallUtil command.So for that below command in my command prompt.


But that command failed with below message

System.BadImageFormatException: Could not load file or assembly '{WriteOffService.exe}' or one of its dependencies. An attempt was made to load a program with an incorrect format.

Then after my check dependencies those were placed fine.After I search I found the reason for this. Smile

I have complied my application according to the 32 bit configuration and I used 64 Bit installUtil to the install application. after I installed it using 32 bit installUtil and its worked as expected.

After you install .Net framework(in my case it is version 4.0) its created the two separate folders for 32 bit and 64 bit.In side those folders for according to the Framework version

Intallation root:\Windows\Microsoft.NET\


(here you can see two different folders Framework(32) and Framwork64(64)).That each folder contains two InstallUtil versions according to the .Net Framework version.


64 bit version


32 bit version