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The Mail and Calendar apps for Windows 10 don't support two-factor authentication. If two-factor authentication is turned on for your account, you'll need to create an app password for that account. An app password is used instead of your normal account password for apps that don't support two-factor authentication. You can sign up for a 14-day free trial, no credit card required, to sync your calendars and streamline your availability across all devices. In most cases, the only way to fix Outlook Calendar not syncing is to use a third-party Calendar Sync Tool like OneCal.

You should use the Outlook web app (explained above) to reconnect the calendars in Outlook Calendar. To manually sync a Google Calendar from Outlook, you should first remove it from Outlook. The downside of this method is that it takes up to 24 hours for events created or updated in Google Calendar to be reflected in Outlook. The second method of fixing Google Calendar not syncing with Outlook is to manually sync Google Calendar to Outlook by exporting the Google Calendar and importing it into Outlook.

Solution 5: Clear RoamCache Files





Outlook calendar syncing problems, while frustrating, are usually fixable. Common culprits include incorrect permissions, network or server issues, outdated software, cached data conflicts, and account misconfigurations. Also, be mindful of potential conflicts when multiple users edit shared calendars.

  • 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.
  • We're on O365, most users are on the monthly enterprise channel (version 2404) with a couple early adopters on the Current channel.
  • Also, be mindful of potential conflicts when multiple users edit shared calendars.
  • The Virto Calendar App for Microsoft 365 & Microsoft Teams is a powerful calendar management solution designed to enhance team collaboration and streamline scheduling processes.
  • In Outlook, shared calendars allow multiple users to access and update a calendar, schedule events and ensure everyone stays on the same page.
  • Shared calendars in Outlook are a powerful tool for team collaboration, but they can sometimes encounter sync issues.
  • If this doesn’t work, the only way to make it work is to use a third-party calendar automation tool like OneCal.
  • The downside of this method is that it takes up to 24 hours for events created or updated in Google Calendar to be reflected in Outlook.


Why has my calendar stopped syncing?



Why do I keep getting a sync error on my calendar?



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 resolving them. Remember, recreating your profile is often a last resort when other troubleshooting steps FixTechGuide Office login guide have failed. It can be time-consuming but is sometimes necessary to resolve persistent issues. Even though Outlook is one of the most used calendar apps among individuals and businesses, offering plenty of features, sometimes it stops syncing.

Allow Mail and Calendar apps through Windows Firewall





If none of the steps above work, the last resort is to delete all Outlook Calendar data. This will delete all your Outlook Calendar data, including login details, preferences, and settings. Please note that the exact wording and layout can vary depending on your device's make, model, and Android version, but these steps should guide you in the right direction.

Troubleshoot calendar and contacts in the Outlook mobile app



Using a Calendar Sync Tool you won’t have to troubleshoot why your Google Calendar is not syncing with Outlook, or manually sync them. If you’ve shared a Google Calendar with an Outlook Calendar, updates in Google Calendar take up to 24 hours to reflect in Outlook Calendar. If none of the above steps work, you may need to troubleshoot further or seek additional support from Microsoft or a qualified IT professional. My theory is that there may be some work stations that have a long uptime and as a result finding it difficult to resolve sync services. We’d (IT Support) had a play around ourselves, and it doesn’t seem to be a web app or desktop app issue. If you don't see a calendar option or your account was listed as IMAP, tap More and select Remove account.





By following these steps, you should be able to resolve most Outlook calendar sync issues, whether on desktop or mobile devices. If problems persist, consider reaching out to Microsoft Support or your organization’s IT department for more advanced troubleshooting. This article is part of our comprehensive series on synchronization issues, designed to help you navigate the sometimes tricky waters of digital calendar management. Here, we’ll focus specifically on troubleshooting Outlook calendar sync problems, exploring common causes and providing quick, effective solutions to get your schedule back on track. Below are the common reasons behind the shared calendar synchronization issues. Remember, patience is key when dealing with shared calendar sync issues.

Re-add account



After removing the Google Calendar from Outlook, you should manually add the Google Calendar again. We wrote an article explaining in detail how to manually sync Google Calendar with Outlook, so please read that for the rest of the steps. Users with "Can Edit" permissions aren’t able to see changes until they remove and re-add the calendar. After confirming synchronization is not working, follow the solutions discussed below to troubleshoot the issue.
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