new outlook not syncing

Question

new outlook is not syncing. classic outlook syncs fine. have tried all fixes

Answer 1

Hi,

This page explains common causes (like corrupted OST files) Common causes of sync problems and offers detailed solutions such as clearing offline items, rebuilding the OST file, and other fixes.

https://learn.microsoft.com/en-us/troubleshoot/outlook/synchronization/synchronization-issue-between-outlook-owa

I hope this helps!

Answer 2

If the new Outlook is not syncing while the classic Outlook is working fine, here are some steps you can try:

1. Clear Offline Items: Right-click the folder that is not syncing, select Properties, then choose Clear Offline Items. After that, go to the Send/Receive tab and select Update Folder.
2. Rebuild the OST File: If clearing offline items does not resolve the issue, consider deleting the .ost file and allowing Outlook to recreate it. Make sure to back up any local data that is not on the server first. You can export this data to a .pst file before deleting the .ost file.
3. Check for Updates: Ensure that your version of the new Outlook is up to date. Sometimes, syncing issues can be resolved with the latest updates.
4. Use Online Mode: If you are using cached mode, try switching to online mode to see if that resolves the syncing issue.
5. Create a New Profile: If the problem persists, creating a new Outlook profile can help resolve various issues, including syncing problems.

If these methods do not work, further investigation may be necessary to identify the root cause of the syncing issue.

---

References:

• Synchronization problems occur in Outlook and in Outlook Web App
• Terminated in error found in Outlook Sync Issues log files