This means that the authentication setup for your sync is no longer valid.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)

• The sync will fail if the groups you selected to load users from no longer exist in Azure AD.
• 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.
• 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.

I have multiple FixTechGuide Office 365 troubleshooting 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

Contact MicroSec today and let our experts handle your Office 365 troubleshooting needs carefully and Microsoft Outlook Email Repair Tool Online professionally. A diagnostic tool that automatically detects and fixes common Office 365 problems. We have reset the router, checked internet speeds, signed in and out of M365 apps, reinstalled apps and checked for Windows updates.

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

TrustedTech delivers unbeatable customer service, with experts in licensing and high-level technicians always on-call to answer your tech issues in-depth. To resolve these issues you should run the steps in this article and check whether the groups in your sync's filtering preference contain users in Azure FixTechGuide login issue guide AD. The Sync Summary email can give further information about this. The Users Loaded count will be 0 if all users fail to meet the system's requirements for user records.

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.