We have resources to help you identify potential issues and fix them. Whether Microsoft Office 365 won’t open, or you're facing persistent Microsoft 365 sign-in problems, our experts are here to help. Microsoft 365 is a robust platform, but when problems arise, fast resolution is key to productivity. From sync errors to sign-in challenges and collaboration setbacks, these common Office 365 troubleshooting techniques can restore service quickly. 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 run the Microsoft consent process using an eligible M365 account after which you will be taken to the sync's setup wizard.

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• 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.

If your Office 365 is not working properly because it’s outdated, support can handle update problems that prevent essential patches and security fixes from being installed. It seems to be some sort of error with the user not being able to connect and sync with M365 servers. This also started happening out of nowhere about a week Outlook stuck updating folders solution ago. A vast community of Microsoft Office365 users that are working together to support the product and others.

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 mailbox not updating on IMAP 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 flush DNS and re-sync Outlook users or groups from Microsoft 365.

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.