This means that the authentication setup for your sync is no longer valid. This can happen for the a number reasons particularly if your sync authenticates using Delegated Permissions. To update from Azure AD Sync to Microsoft Entra Connect, see the upgrade instructions.

Top questions it leaders have about microsoft copilot (and how to answer them)

• Find out what to do if you are having issues with syncing users or groups from Microsoft 365.
• TrustedTech is dedicated to being a reliable resource for all software and technology support needs.
• Our licensing engineers can help triage complex problems and ensure you're on the right support path.
• To diagnose and automatically fix several common Microsoft 365 sign-in issues, run the Microsoft 365 Sign-in troubleshooter.
• The sync will fail if the total number of all users (active or inactive) on your account exceeds the user limit placed upon it if present.
• From sync errors to sign-in challenges and collaboration setbacks, these common Office 365 troubleshooting techniques can restore service quickly.
• These figures will give you an impression of how far over the limit the account is.
• Real-time collaboration is at the core of Microsoft 365; however, issues can arise due to permissions, software version conflicts, or connectivity problems.

The Users Processed count will be 0 is there are no users in the Outlook OST vs PST repair 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 Outlook data file cannot be accessed 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?

Comprehensive repair solutions for Outlook Stuck on Synchronizing Folders Office apps—both Quick Repair and Online Repair to ensure minimal downtime. To identify Microsoft-side issues affecting Office 365 services. Are you facing Microsoft Office 365 not opening or continuing to crash? This is one of the most frustrating issues with Microsoft Office, often caused by update failures, corrupted files, or compatibility problems. Discover how IT leaders can address key Microsoft Copilot questions on cost, deployment, security, and integration to maximize ROI and adoption. In these cases, direct escalation to Microsoft or working with a Microsoft CSP partner, such as TrustedTech, can expedite resolution and minimize downtime.

Tools & Methods To Use to Troubleshoot Office 365 Issues

The most common reason for missing users is that you've run a Test Sync, instead of a Manual Sync. You can run a Manual Sync from the Microsoft 365 Sync page. If that doesn't resolve your missing users issue, please follow our guide to troubleshooting missing users below. Whether you’re struggling with Microsoft 365 sign-in problems, Office 365 not working, or syncing issues, our team is here to help. Don’t let technical problems affect your productivity—contact us for immediate assistance.