Fix Microsoft 365 Sync Issues: Expert Q&A Guide

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Troubleshoot Office 365 Sync and Login Issues

You can close the wizard at this point as you do not need to complete it for re-authentication to take effect. You should run a test sync after re-authenticating the sync to ensure it is working. It could be due to incorrect login details, administrator password resets, or account lockouts after multiple failed attempts. Whether it’s a Microsoft Office 365 sign-in problem or a password reset issue, here’s how to get back in securely.

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  • The Users Processed count will be 0 is there are no users in the synced dataset after filtering.
  • You'll also receive a mail (to the alternate email and to your admin email) from Microsoft 365 that indicates your tenant has encountered directory synchronization errors.
  • Similarly you should review the Users Deactivated sheet on the sync summary spreadsheet attachment as you can also delete these users to bring your total down.
  • Contact MicroSec today and let our experts handle your Office 365 troubleshooting needs carefully and professionally.
  • After you run the commands, and if they completed without errors, you may see a quick progress indicator or a status result that contains information about the package installation.
  • This also started happening out of nowhere about a week ago.


The Users Processed count will be 0 is there are no users in the Office 365 Sync Errors Fix synced dataset after filtering. If you don't wish an inactive user to be made active by the M365 sync, you can add the user's email address to the sync forbid list. You can do this in the Microsoft 365 Sync Wizard on the configuration page of your platform settings. You'll also receive a mail (to the alternate email and to your admin email) from Microsoft 365 that indicates your tenant has encountered directory synchronization errors.

I got an error message that my company has exceeded the number of objects that can be synchronized



Our licensing engineers can help triage complex problems and ensure you're on the right support path. The error message in the Summary sheet of the Sync Summary spreadsheet attachment can also highlight the reason for this. Both of our authentication methods can fail if the Enterprise Applications entry for the sync in Azure AD is deleted or Outlook Login Issues Troubleshooting if it has had its permissions modified. You can stop any accounts from being brought over by adding them to the sync deny list. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.



What should I do if my sync failed due to authentication issues?



Troubleshoot Office 365 Sync and Login Issues

After you run the commands, and if they completed without errors, you may see a quick progress indicator or Repair Outlook Profile Online a status result that contains information about the package installation. This issue occurs only on computers that are running Windows 10, version 1703 or later, and Microsoft 365 version 1807 or later. We are a paid-for question and answer site and not affiliated with any other company. I will be assisting you today and hope we can solve the issue together.

Tools & Methods To Use to Troubleshoot Office 365 Issues



Troubleshoot Office 365 Sync and Login Issues

While M365 is highly stable, it’s not immune to occasional disruptions. The sync will fail if the groups you selected to load users from no longer exist in Azure AD. Typically this is because the selected groups have been deleted from Azure AD since the M365 sync was configured on your account. To get the sync working you will either need to delete users or have the user limit on your account increased.
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