Lunetikk's IT Wiki

Description: Delete, move, delete…
Doing this to fast will cause an error when syncing.

Reason: Outlooks sends the “delete file xy” but Exchange cant find the file where it is suppose to be because of the fast moving and deleting without syncing in between.

Fix: Create a new OST-file and synchronize your folders
Rename your old OST-file and Outlook will create a new one.
1. Close Outlook.
2. Start Explorer and search for *.ost
3. The found file should be in C:\Users\<Username>\AppData\Local\Microsoft\Outlook as outlook.ost
4. Rightclick the file and select rename. Edit the ending to “.old” instead of “.ost”.
5. Start Outlook and click Send/Receive

At the end, when everything worked, remove the old OST-file