This means that the authentication setup for your sync is no longer valid.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

• I have a user who is having trouble syncing with Microsoft 365.
• The idea is to provide a recycle bin of users who you can delete when you no longer need them.
• The Users Loaded count will be 0 if all users fail to meet the system's requirements for user records.
• The M365 sync establishes a synced dataset based on your M365 data and the filtering configuration of your sync.
• You can run a Manual Sync from the Microsoft 365 Sync page.
• You will need to have the correct privileges set on your Azure account in order to set up the M365 sync.
• The error message in the Summary sheet of the Sync Summary spreadsheet attachment can also highlight the reason for this.
• It could be due to incorrect login details, administrator password resets, or account lockouts after multiple failed attempts.

I have multiple Outlook Not Sending or Receiving Email 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

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 troubleshoot Outlook synchronizing folders error 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?

After you run the commands, and if they completed without errors, you may see a quick progress indicator or fix Outlook after Windows update issues 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

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. The Summary sheet on the spreadsheet attachment of your sync summary includes an Updated User Count and User Limit. These figures will give you an impression of how far over the limit the account is. Sync failure alerts do not always include a full summary or attachment, you can run a test sync to obtain this data.