Have you tried running scanpst.exe against your .pst file?

--�
Milly Staples [MVP - Outlook]

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After furious head scratching, Jan asked:

| Outlook is open and working fine, I go to do something else on the
| computer and when I return to Outlook I can see the pane showing all
| the folders on the left, Inbox with message headers in the middle but
| the display pane shows:
|
| "Cannot display the folder. Exited without properly closing your
| Outlook data file ......\....\Outlook.pst"
|
| I have to shut down the program and restart it and all is ok for a
| while then back to above.
|
| This has happening frequently for the last 3 days or so. I've not
| done anything different than normal in Outlook - I wouldn't know how
| to exit Outlook without properly closing the data file.
|
| Anything I can do to correct this?
|
| Jan