Fixing problems with directory synchronization for Microsoft 365 Microsoft 365 Enterprise Microsoft Learn

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The Users Loaded count will be 0 if all users fail to meet the system's requirements for user records.



Troubleshoot Office 365 Sync and Login Issues

Boost your SMB’s security and compliance with Microsoft 365 Business Premium. Discover Defender and Purview add-ons for enterprise-grade protection at SMB-friendly pricing. TrustedTech is a Microsoft CSP Direct Bill Partner with all six Solutions Partner designations and decades of expertise in licensing, support, and cloud infrastructure. If you're looking for smarter ways to manage, secure, or optimize your Microsoft 365 (M365) environment, our U.S.-based team is here to help. Microsoft offers several built-in tools to help identify and resolve persistent issues. You will need to have the correct privileges set on your Azure account in order to set up the M365 sync.

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  • The simplest way to resolve authentication issues is to rerun the authentication process by clicking the Sign in with Microsoft on the Microsoft 365 settings page.
  • You can do this in the Microsoft 365 Sync Wizard on the configuration page of your platform settings.
  • Ive repaired the OST and changed cache mode to only cache 1 year.
  • Another which is shown below, is a user opens a new message, or replies to one, and lets it sit for a while.


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



The idea is to provide a recycle bin of users who you can delete when Office 365 sync problems and login fixes you no longer need them. You can view your inactive users on the Users page and delete them as you see fit. 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. With directory synchronization, you can continue to manage users and groups on-premises and synchronize additions, deletions, and changes to the cloud. But setup is a little complicated and it can sometimes be difficult to identify the source of problems.

Troubleshoot Office 365 Sync and Login Issues

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



Troubleshoot Office 365 Sync and Login Issues

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Tools & Methods To Use to Troubleshoot Office 365 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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