
If you’re not an admin, ask your IT department to check this for you.
Access levels and their impact on calendar not syncing Outlook
Why has my calendar stopped syncing?
If you see any error message similar to the following, the synchronization is not working properly. For teams looking to enhance their calendar management further, the Virto Calendar App for Microsoft 365 & Microsoft Teams offers a powerful alternative. Remember, forcing a sync or clearing cache can take some time, especially for large mailboxes. Remember, the repair process may take some time, especially for accounts with large amounts of data.
Common causes of sync issues for ‘my Outlook calendar is not syncing’
It can be time-consuming but is sometimes necessary to resolve persistent issues. Further, you can check the Sync Issues folder in the Outlook navigation pane to find the reason behind the calendar synchronization issue. For Outlook not syncing emails both systems, after making changes, restart Outlook to ensure the new settings take effect.

Solutions to Fix the Shared Calendar not Syncing issue with Outlook
In the following sections, we’ll dive into specific solutions to get your Outlook calendar syncing smoothly again. The Virto Calendar App for Microsoft 365 & Microsoft Teams is a powerful calendar management solution designed to enhance team collaboration and streamline scheduling processes. This app bridges the gap between various Microsoft 365 apps, providing a seamless calendar syncing experience that significantly improves team planning and coordination.
How to Fix Shared Calendar not Syncing with Outlook?

First, ensure you have the necessary permissions to view and edit the calendar in question. Check your send/receive settings to make sure Outlook is set to update frequently enough. Verify that you’re not in offline mode and that your internet connection is stable.
- A problematic OST file can also cause shared calendar synchronization problems.
- If a damaged Outlook data file (OST) is the root cause behind the issue, you can recreate the OST file after taking a backup and deleting it from its default location.
- By following these steps, you should be able to resolve most Outlook calendar sync issues, whether on desktop or mobile devices.
- Remember, identifying the root cause is the first step to resolving your sync issues.
- Common culprits include incorrect permissions, network or server issues, outdated software, cached data conflicts, and account misconfigurations.
- All of my users use Outlook on the Web in Chrome.for one day -using incognito mode solved the mail won’t send message.
- Therefore, it’s crucial to resolve the issue as soon as possible.
If the shared calendar is syncing, then find and remove the faulty add-in to fix the issue permanently. By leveraging these features, teams can significantly reduce the occurrence of sync issues and improve overall calendar management efficiency. When your Outlook calendar isn’t syncing properly, it can throw your entire schedule into disarray.