Now, as you have got the main reasons behind the issue, we will provide you some ways to get out of this issue. Settings: Settings are not accurately configured.Cache Issue: Your Outlook Cache is corrupted.Failed to Connect: You failed to connect Outlook for Mac with the Exchange Server.Offline Mode: Your Outlook for Mac is in offline mode.Many users of Outlook for Mac face this issue, and so we need to realize the causes behind it. Prominent Reasons Behind this Synchronization Issue Due to this, mailboxes are not updated on the server-side and on the client-side, and it becomes necessary to fix Outlook for Mac not syncing with the Exchange Server. Sometimes, this synchronization process gets affected partially or fully. Synchronization between the server and client application is done so that whenever there is any modification in the Server-side or client-side, the change gets updated on the other side as well. It facilitates offline working in an Exchange environment. Outlook for Mac provides Exchange connectivity in a Mac environment.
