If you work in IT support, Exchange administration, or you are a developer tinkering with Microsoft Outlook, you have likely encountered a situation where standard troubleshooting just doesn’t cut it. When PowerShell scripts and the Outlook GUI fail to reveal the source of a corrupted profile or a ghost folder, it’s time to bring out the big guns.

Rename or move folders that are otherwise "locked" or unchangeable.

– MFCMAPI will lock MAPI sessions. Outlook must be closed completely (check Task Manager for OUTLOOK.EXE ).

Here is a basic workflow to view your Outlook Profile properties:

Because MFCMAPI interacts directly with the components of your system, choosing the correct architecture is critical. Why You Need MFCMAPI 64-Bit