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Why does my application log have many Event ID 27 entries: Calendar Folder Property is Missing

I have been getting lots of Event ID 27 entries in my Application log when i run Outlook.  It says:  When I open an entry, it says:  Calendar Folder Property is Missing.

Applicaton Log
I discovered that when I remove the data file "Archive.pst" from my Outlook account, NO Event ID 27 entries appear in the Application log.

When I add the data file "Archive.pst" back to my Outlook account, then Event ID 27 entries start accumulating again.

I did a SCANPST of my archive file.  It contained errors, but the scan repaired them all.  When I opened Outlook the Event ID 27 entries appear again in the Application log.

If you have a solution, please pass it this way.  Thank you for taking the time to help me.
1 Solution
Shreedhar EtteCommented:
Have you installed Office 2010 Sp2 recently? If yes, then it a known issue.

Please refer this article:
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