Forum Discussion
Milo765
Oct 23, 2025Copper Contributor
outlook contacts continuously restore themselves
 I decided to clean out my contacts in outlook, so I exported them all out to a .csv file and then I deleted all 1,200 of them (100 at a time, because apparently microsoft feels that any higher amount...
LisaHendrickson
Oct 29, 2025Iron Contributor
Few things for you to work on.
I would create a new Outlook profile, a new Outlook profile will create you a new OST file and I'm guessing the Outlook PC based OST might be corrupted or not working great. Keep Outlook open until you only see "connected to Exchange" (no more "updating"). This allows the profile to completely sync and index. Once complete, look at the contacts and see what comes down.
Then delete again if they are still there. Empty your deleted items. Leave Outlook open for awhile, 1200 contacts should not take that long to finish updating. If there are still there, then we move to next level troubleshooting.
Please update this post and I'll let you know what steps I would take next.
Lisa