Resolve sync issues in Mail and Calendar apps in Windows 10

In this guide, you will learn the reasons why shared calendars are not syncing with Outlook and the solutions to troubleshoot and resolve the issue. 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.
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Why has my calendar stopped syncing?
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. Remember, recreating your profile is often a last resort when other troubleshooting steps have failed.
Solution 6: Clear Offline Items and Verify Calendar Sharing Settings
This section will guide you through a series of troubleshooting steps to get your calendar back on track, whether you’re using Outlook on your desktop or mobile device. Accumulated cache and temporary files can interfere with the Outlook synchronization process and lead to sync errors and issues. Shared calendars in Outlook are a powerful tool for team collaboration, but they can sometimes encounter sync issues. Understanding why these problems occur is the first step in Outlook not Syncing emails resolving them.

Synch Teams and Outlook Calendars
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?
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.” Check with your email provider for instructions about how to create an app password for your email account. We’re sorry you’re having problems with the Mail and Calendar apps for Windows 10. To fix the issue, please try each of the following solutions in order. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
- Firewalls and antivirus software might prevent you from syncing your email and calendar events.
- Often, the root cause lies in incorrect sharing permissions, where users might not have the appropriate access levels to view or edit calendar entries.
- To fix the issue, please try each of the following solutions in order.
- If you see any error message similar to the following, the synchronization is not working properly.
- Before you begin, make sure that your device has the latest operating system and app updates.
It’s worth noting that sometimes, what appears to be a sync issue might actually be a delay. 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.
