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"Outlook is using an old copy of your Outlook data file (.ost)..." with ProfileUnity folder redirection

Product: ProfileUnity

Product Version: All

Expires on: 365 days from publish date

Updated: March 5, 2014

 

Problem:

When Outlook is open I get this error:

"Outlook is using an old copy of your Outlook data file (.ost). Exit Outlook, delete the file, and restart Outlook. A new file will be automatically created the next time you initiate a send/receive."

 

Symptoms:

Outlook_ost.jpg

Local Application Data is redirected to UNC path:

\\server\share\%USERNAME%\AppData\Local

Office 2013 Force OST Location path is:

\\server\share\%USERNAME%\AppData\Local\Microsoft\Outlook

When the file is deleted the new file is created next time but continues to give the error after its open again.

The backend is supported by two servers and one DFS share. 

 

Possible Resolution(s):

A) Disable DFS 

B) Disable cached Exchange mode.

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