Home/ Questions/Q 94551
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-10T23:31:10+00:00

I am trying to install a Windows service using InstallUtil.exe and am getting the

  • 0

I am trying to install a Windows service using InstallUtil.exe and am getting the error message

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

What gives?

EDIT: (Not by OP) Full message extracted from dup getting way more hits [for googleability]:

C:\Windows\Microsoft.NET\Framework64\v4.0.30319>InstallUtil.exe C:\xxx.exe Microsoft (R) .NET Framework Installation utility Version 4.0.30319.1 Copyright (c) Microsoft Corporation. All rights reserved.

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

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Make sure the newest Framework (the one you compiled your app with) is first in the PATH. That solved the problem for me. (Found on a forum)

    • 0