Another frequent culprit is outdated software and caching problems. Lastly, the very nature of collaboration can lead to sync issues. When multiple users make changes to the calendar simultaneously, conflicts can occur. In Outlook, shared calendars allow multiple users to access and update a calendar, schedule events and ensure everyone stays on the same page.

Solution 8: Repair or Reinstall Outlook (MS Office)

However, when Outlook Calendar syncing issues arise, it can disrupt workflow and hinder effective communication. This troubleshooting guide has provided step-by-step solutions to address the Outlook Calendar not syncing problem. By following the recommended steps, business owners and decision makers can regain control over their calendars and ensure seamless synchronization. Remember to regularly update Outlook and Windows, check network connectivity, and verify sharing settings to prevent future syncing issues. Efficient calendar management is crucial for businesses to stay organized and ensure smooth collaboration among team members. However, issues with calendar syncing can disrupt workflow and lead to missed deadlines and miscommunication.

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.

Troubleshoot calendar and contacts in the Outlook mobile app

• It verifies your identity using your password and a contact method (also known as security info).
• Before you begin, make sure that your device has the latest operating system and app updates.
• Outlook doesn’t always sync instantaneously, and there can be a short lag between changes made and their appearance across all devices.
• Two-factor authentication helps protect your account by making it more difficult for someone else to sign in.
• Also, be mindful of potential conflicts when multiple users edit shared calendars.
• If the synchronization stops just after activating any of the add-ins, that’s the culprit.
• Calendar syncing plays a pivotal role in maintaining an organized and efficient schedule.
• Check if the shared calendar is now syncing properly with Outlook.

Further, you can check the Sync Issues folder in the Outlook navigation pane to find the reason behind the calendar synchronization issue. If you still can't sync your email after removing your account and adding it again, you might need to add the account using advanced setup. For more information, see Add an account using advanced setup. Outlook will load a new fresh profile and synchronize all mail items from the mailbox server. If the synchronization starts working, you can remove the old profile from Outlook.

Check the connectivity to your email server

If problems persist, consider reaching out to Microsoft Support or your organization’s IT department for more advanced outdoor signs for business 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.





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.