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MFC32.dll error

Last Updated: Feb 24, 2016 06:22AM PST


C:\Windows\System32\Mfc42.dll could not be opened


If this error message appears while trying to install Map Objects either manually or during the software installation. The file C:\Windows\System32\Mfc42.dll could not be opened. Please check that your disk is not full and that you have access to the destination directory. If none of the user admin logins, granting access to that file, running as an admin or anything else would work then follow the steps below.


  1. Turn off UAC by going to UAC settings from control panel and set the UAC level to the lowest possible and apply.
  2. Restart the machine and now install MO23rt.exe by running cmd.exe as an administrator and running MO23rt.exe from command line. Command MO23rt.exe /abcdefghijklmnpq and press enter.
  3. This should install MO. Launch TRACE and check everything is working.
  4. Now turn UAC back on and test everything.
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