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When trying to launch ArcMap, it fails with the error message:
"Abnormal program termination!"
The .MXT file associated with ArcMap has most likely become corrupted.
Warning: The instructions below include making changes to essential parts of your operating system. It is recommended that you backup your operating system and files, including the registry, before proceeding. Consult with a qualified computer systems professional, if necessary. Esri cannot guarantee results from incorrect modifications while following these instructions; therefore, use caution and proceed at your own risk.Delete the ArcMap template file, 'Normal.mxt'. It will be recreated the next time you start ArcMap.
C:\Documents and Settings\<your_user_account>\Application Data\Esri\ArcMap\Templates