AcGenral.DLL error RRS feed

  • Question

  • When I try to install iTunes on my Windows 7 (Home version) 64 bit computer, I get the following error at the very beginning of the install:

    msiexec.exe - Bad Image
        C:\Windows\AppPatch\AppPatch64\AcGenral.DLL is either not designed to run on Windows or it contains an error. Try installing the program again using the original installation media or contact your system administrator or the software vendor for support. 

    I also get this error when HP is doing some of it's routine updates, I have an HP G62 laptop.  Can someone help me

    Thursday, August 4, 2011 6:02 PM


  • AcGenral.dll is a Windows file used for application compatibility. "Bad image" often means the file is just corrupt.

    Check the C: drive for errors -


    That will prompt to schedule the check at restart because you are checking the drive that Windows is installed on.

    When it is finished you can check the results by looking in Event Viewer in the Application log for Event ID 1001 from source Wininit.

    Then run System File Checker to check Windows files for errors -


    If those two steps don't work, you can drive copying a version of AcGenral.dll from a Windows 7 computer that is not having the problem and overwriting the version on the problem computer.

    • Proposed as answer by Arthur Xie Monday, August 8, 2011 8:42 AM
    • Marked as answer by Arthur Xie Friday, August 12, 2011 9:51 AM
    Friday, August 5, 2011 3:59 AM