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MS Outlook - Extend.dat error
Either the file is corrupted or is already open somehow, but everytime I launch Outlook I get an eror message that says, "An extension failed to initialize. can't open file: extend.dat. the file may not exist, you may not have permission to open it, or it may open in another program." I have...- skilla
- Thread
- Replies: 3
- Forum: Microsoft: Office
