This means that the authentication setup for your sync is no longer valid.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 Users Processed count will be 0 is there are no users in the synced dataset after filtering.
• The authentication issue occurs because of missing package information about either the Active Directory Authentication Library (ADAL) or Live ID.
• With directory synchronization, you can continue to manage users and groups on-premises and synchronize additions, deletions, and changes to the cloud.
• Contact MicroSec today and let our experts handle your Office 365 troubleshooting needs carefully and professionally.
• After you run the commands, and if they completed without errors, you may see a quick progress indicator or a status result that contains information about the package installation.
• This also started happening out of nowhere about a week ago.

I have multiple fix Outlook after Windows update issues 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

To diagnose Outlook and OneDrive connection issues that often cause Office 365 not working problems. Create your account and connect with a connection status shows disconnected world of communities. I have a user who is having trouble syncing with Microsoft 365. The authentication issue occurs because of missing package information about either the Active Directory Authentication Library (ADAL) or Live ID.

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 fix Outlook after Windows update issues users or groups from Microsoft 365.

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.