Microsoft provides a utility for identifying and correcting corrupted PST files called SCANPST.
Here are some example problems we have seen that have been resolved by SCANPST:
a. Some Outlook folders are not being indexed
b. Outlook indexing hangs or stops at a certain percentage
c. Unable to add a specific PST file to X1
d. Unable to add any PST files to X1
Here are the steps for running SCANPST:
1. Close X1 (using the File > Exit command) and Outlook -- make sure there are no X1 or Outlook tasks running in the Task Manager
2. The Scanpst.exe file is typically located in one of the following folders:
- disk drive:\Program Files\Common Files\System\Mapi\1033\
- disk drive:\Program Files\Common Files\System\MSMAPI\1033
- disk drive:\Program Files(x86)\Common Files\System\Mapi\1033\
- disk drive:\Program Files(x86)\Common Files\System\MSMAPI\1033
- disk drive:\Program Files\Microsoft Office\Office12
- disk drive:\Program Files(x86)\Microsoft Office\Office12
- disk drive:\Program Files\Microsoft Office\Office14
- disk drive:\Program Files(x86)\Microsoft Office\Office14
3. Double-click on Scanpst.exe
4. Locate and scan your PST files
5. If any errors are found, allow Scanpst to fix them
Please note: We have seen cases where this utility needed to be run a few times to catch some PST corruption. You should then add back your PST files to X1 one at a time.
Adding the same PST file through both Outlook AND X1 directly may create conflicts.