Mar 09 2020 03:03 PM
Mar 09 2020 03:03 PM
I've been having a strange, sporadic issue for the past several months. I'm using macOS Catalina and Outlook 16.35.
Outlook sends and receives new mail just fine. But read/unread state, and moves/deletes don't get synced back to O365. For example I could be working on my MacBook for several hours. During that time I'm sending, receiving, moving, and deleting email with no apparent issues. New mail is coming in and mail that I'm composing is sending, and Outlook isn't notifying me of any sync errors.
But then later I'll check email from another device or from my phone, and all of the mail that I've already cleared out of my inbox on my MacBook is still appearing as unread and sitting in my Inbox on every other device. Restarting Outlook on my MacBook doesn't fix it, but usually if I reboot my MacBook entirely and then restart Outlook on it, Outlook will finally sync everything.
Any idea what could be the issue here? Is there a local cache I can flush?
Mar 09 2020 03:30 PM
This is one of the most outlook common issue, so please try following technical steps:
please let me know if you have further question, i will be gald to help :)
Feb 15 2021 11:24 PM
I have the exact same behaviour, did all the steps you mentioned, but it doesn't get better.
Sometimes a new mail comes in immediately, but usually they're delayed by up to 20 minutes.
When I go to offline mode and back to online, it syncs most of the times, but sometimes I need to do that several times, before it syncs at all.
Connection state usually shows "connected to <mailbox>", sometimes last sync is current, sometimes it's not, but the state clearly isnt synced.
Any other ideas?
Mar 01 2021 03:12 AM
Hi @Jason Clishe, I faced a similar issue where outlook would stop syncing indefinitely. while going through many methods, I just toggled the "New outlook" button and switched back to the old outlook look and it started syncing again. Not sure how helpful this would be, however, let me know in case it works for you as well.