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.
• Comprehensive repair solutions for Office apps—both Quick Repair and Online Repair to ensure minimal downtime.
• 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.
• You run the Microsoft consent process using an eligible M365 account after which you will be taken to the sync's setup wizard.

I have multiple Fix Outlook and Office 365 Errors 2025 users experiencing sync errors with Outlook and office365. Another which is shown below, is a user opens a new message, or replies to one, and lets it sit for a while. When they go back to the message and press send they get an error that the message has been deleted. Ive repaired the OST and changed cache mode to only cache 1 year.

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 Outlook profile repair and recovery steps 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.

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

For details see Identify directory synchronization errors in Microsoft 365. Real-time collaboration is at the core of Microsoft 365; however, issues can arise due to permissions, software version conflicts, or connectivity problems. We go above and beyond the average software reseller because we built our business on trust. As active members in the IT community, we work to support our clients’ businesses and provide them with peace of mind. Find out what to do if you are having issues with syncing recreate Outlook profile step by step users or groups from Microsoft 365.

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.