Sometimes after upgrading Outlook from an older to a newer version, you might get an error message stating “PST file is corrupted. Run Scanpst.” After getting such an unexpected error, when you try to fix the PST file by using inbox repair tool, you might get the message saying “This application failed to start because mapi32.dll was not found. Re-installing the software may fix the problem.”
Actually Mapi32.dll is a Dynamic-Link Library file that is used by lots of different email applications. This error usually occurs when you upgrade Outlook from an older version to a newer version or when you uninstall and then reinstall the Outlook application again. However you can fix MSMAMP31.DLL error by following few simple steps mentioned below:
