Microsoft Outlook Sync Issue After Office 365 Update Microsoft Q&A

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This can happen for days at a time, and then disappear for a day or 2, only to appear again.



Fix Outlook and Office365 Sync Issues

The other solution to fix Outlook sync issues is recreating Microsoft Outlook profile. Follow each step carefully to resolve synchronization errors. Sometimes an error appears in the Mail and Calendar apps when Microsoft Outlook Email Repair Tool Online the apps try to sync new email or calendar events. We’ve had sync issues with employees from time to time however, re doing the mail profile or wiping the Windows profile usually fixes it.

Method 4: Recreating the Outlook Profile



Fix Outlook and Office365 Sync Issues

If you still can't sync your email after removing your account and adding it again, you might need expert Outlook tips by FixTechGuide to add the account using advanced setup. For more information, see Add an account using advanced setup. Now, we will verify the server settings to fix the Outlook synchronization error. Knowing the reasons behind the Outlook sync issues will help us to fix this problem and prevent issues in communication and workflow.



Check the connectivity to your email server



  • I’ve been in contact with Microsoft they had me migrate his account\data to another server this did not fix it.
  • The Support and Recovery Assistant, a tool provided by Microsoft, can identify and resolve common Outlook problems.
  • Below are the steps I’ve taken to try to resolve this issue.
  • Firewalls and antivirus software might prevent you from syncing your email and calendar events.
  • This solution will be beneficial for users who are facing Outlook syncing issues because of corrupted PST or OST files.


When the user is signed into their mobile app, webmail, or the expert Outlook tips by FixTechGuide Windows Mail app, they are able to receive email perfectly fine with those. The issue is occurring only in the Outlook program installed on Windows. To update from Azure AD Sync to Microsoft Entra Connect, see the upgrade instructions.

Methods to fix Microsoft Outlook syncing error



If the size of your .ost file is close to the limit, you could try increasing the limit on your client, restart Outlook and see if there is any difference. If you're using an Outlook.com, Microsoft 365, or Exchange account, you won't have advanced mailbox settings unless the account was set up using advanced setup. The client has a computer off the domain at home that his work email is tied to and he has never had any of these issues in Cache mode with that device. I’ve unchecked download shared folders when setting up a new Outlook profile. Check with your email provider for instructions about how to create an app password for your email account. The Mail and Calendar apps for Windows 10 don't support two-factor authentication.

Microsoft Outlook Sync issues





Always make sure your profile and settings are set up correctly, your software is up to date, and your connection is steady. The causes of sync issues and local failures in Outlook are explained in this guide, along with practical troubleshooting and resolution techniques. You can extract and recover all of your mail items to a PST file using sophisticated OST File to PST Converter software if your OST file becomes unavailable or orphaned. Third-party firewalls or antivirus software might prevent you from syncing your email and calendar events. Check the software documentation to learn how to temporarily turn it off.
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