Hi @Abdallah HASSAY ,
Thank you for posting your question in the Microsoft Q&A forum.
According to your description, you are experiencing a problem with Outlook on Mac not synchronizing with Exchange Server. I was wondering if it would be convenient for you to let me know if there are any other users in the organization, other than this account, who are experiencing the same issue?
For some of the reasons behind this issue, some of them are described below:
- Offline Mode: When using Outlook for Mac in offline mode, it does not synchronize with Exchange and hence causes synchronization issues.
- Connection failures: Network or server related issues (such as slow or unstable connections, outdated passwords, or outdated macOS) may make the initial connection to the Exchange Server difficult.
- Cache issues: A corrupted Outlook cache may prevent Mac mail from synchronizing with Exchange issues, so follow some experts' advice to delete or recreate the cache.
- Incorrect settings: Misconfigured settings such as date and time, server address, etc. can cause such synchronization problems. Check the settings and make necessary adjustments to fix the problem.
Now, as you understand the main reason behind the issue, the following document will provide you some ways to get rid of this Mac mail not synchronizing with Exchange issue.
Fixed Outlook for Mac Not Synchronizing with Exchange Server Issue
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Thank you for your support and understanding.