Repair PST After ScanPST MSMAMP31.DLL Error

Sometime upgrading Outlook from old to new version we get an error message that “PST file is corrupted. Run Scanpst”. After getting this error message we go for the inbox repair tool that is provided by Outlook to fix corrupted PST. But surprisingly while we try to use inbox repair tool we get another error message that scanpst failed to start because mapi32.dll was not found. This is such an frustrating error and in that situation we don’t know what to do. If you are also facing such situation and want to know how to repair PST after ScanPST MSMAMP31.DLL error then here you will get the solution.


Many user don’t understand what actually the Mapi32.dll error means. Well Mapi32.dll stand for Dynamic-Link Library which is used by several email application. It can be written over if you installed any email application in addition to Outlook. It happen when we upgrade Outlook to some new version or re-installing the latest version on that system which previously had older version. Here are some steps which may useful to repair PST after ScanPST MSMAMP31.DLL error

  • Click on the “Start” button of your Windows
  • After that click on “Computer” and then go to “C” drive
  • Go to Program Files> Common Files> System> MSMAPI> 1033 folder.
  • After that Right-click on “Msmapi32.dll” and click “Rename”
  • Rename it with “Msmapi32.old which serve as a backup
  • Start your Outlook and look for Msmapi32.dll
  • If the application not found the Msmapi32.dll file then the problem solved

Using these steps you may not get the MSMAMP31.DLL Error but if the PST get corrupted then it can’t be fixed. In such situation you have to opt some third party software. If you really want to repair PST after ScanPST MSMAMP31.DLL error then it is recommended to use Stellar Outlook PST repair Software. This software contains powerful scanning features which find out the status of corrupted PST files and fix them easily. The trial version will repair the corrupted PST and you can preview them. But in order to save the repaired PST you must purchase the paid version.


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