From looking at the log messages my suspicion is that the authentication token in use contains characters that are being too strongly validated by emClient and rejected. Sometimes the token will not contain these characters and be accepted. If repair didn’t fix the error, you should uninstall Outlook and do a fresh install. In the Send/Receive Settings – All Accounts window, ensure that the Calendar checkbox is checked. If you’re not an admin, ask your IT department to check this for you.

Multiple user edits and sync conflicts

If you’re a business owner or decision maker experiencing problems with Outlook Calendar not syncing, this comprehensive troubleshooting guide is here to help. We’ll explore the common causes behind this issue and provide step-by-step solutions to get your calendars back in sync. Often, the root cause lies in incorrect sharing permissions, where users might not have the appropriate access levels to view or edit calendar entries. Network hiccups or server problems can also disrupt the smooth flow of calendar data, leading to inconsistencies across different users’ views.

Why Is My Outlook Calendar Not Syncing?

By leveraging these features, teams can significantly reduce the occurrence of sync issues and improve overall calendar management efficiency. These advanced troubleshooting steps can often resolve persistent issues that simpler methods can’t fix. However, they should be approached with caution, especially in managed business environments.

Solution 3: Update Outlook and Windows

• For more information, see Add an account using advanced setup.
• Common culprits include incorrect permissions, network or server issues, outdated software, cached data conflicts, and account misconfigurations.
• Check with your email provider for instructions about how to create an app password for your email account.
• Lastly, the very nature of collaboration can lead to sync issues.

Outlook doesn’t always sync instantaneously, and there can be a short lag between changes made and their appearance across all devices. If your password isn't the problem, you might have a certificate error. If so, you'll see a message that says, "There is a problem with the server's security certificate. The security certificate is not from a trusted certifying authority."

Common Reasons for Shared Calendar not Syncing with Outlook Issue

If problems persist, consider reaching out to Microsoft Support or your organization’s IT department for more advanced sign company dallas troubleshooting. A problematic OST file can also cause shared calendar synchronization problems. This happens because an inconsistent OST file fails to save the calendar data properly. On restarting, Outlook should download and synchronize all mail items, and you should see the updated shared calendar. Below are the common reasons behind the shared calendar synchronization issues.

Outlook calendar sync issues in the past couple weeks?

You’ll need to update your third-party mail and calendar app to a version that supports modern authentication. Accumulated cache and temporary files can interfere with the Outlook synchronization process and lead to sync errors and issues. If the shared calendar is syncing, then find and remove the faulty add-in to fix the issue permanently.