You create a meeting on your phone, and it doesn’t show up on your laptop. 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. Further, you can check the Sync Issues folder in the Outlook navigation pane to find the reason behind the calendar synchronization issue. Calendar syncing plays a pivotal role in maintaining an organized and efficient schedule. Whether you’re managing personal appointments or coordinating team meetings, a synchronized calendar ensures that everyone is on the same page, literally and figuratively.

The reason is that if the Calendar that is not syncing is not an Outlook calendar, it takes up to 24 hours for events to be reflected in Outlook. If you have less than 5GB of free storage, please make sure to delete unnecessary data, images, videos, or apps you no longer use. Even though this is not common as iPhones and iPads generally have lots of memory, if you’re running low on storage, chances are that new events won’t show up in your calendar. Regardless of the type of calendar provider you’ve connected to Google Calendar (Outlook, iCloud, or another Google Calendar), the first step is to remove it from Google Calendar. To do so, follow the same steps as the "Manually sync Google Calendar to Outlook" section above.

Automatically sync Outlook Calendars

If you’re using an IMAP or POP account, some of these options may not be available, and you might need to check your account-specific sync settings. 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. The most common cause of an out-of-date account is an incorrect password. If your password is incorrect, you'll see a message asking you to update your password. 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.

If your password isn't the problem, you might have a certificate error.

Once you have a stable and consistent network connection, you can go ahead and follow the other advanced troubleshooting solutions.

If the shared calendar is syncing, then find and remove the faulty add-in to fix the issue permanently.

Windows Defender Security Center is free security software that's included with Windows 10.

In this section, we’ll explore how the Virto Calendar App for Microsoft 365 and Microsoft Teams can take your calendar management to the next level.

By leveraging these features, teams can significantly reduce the occurrence of sync issues and improve overall calendar management efficiency.

Why has my calendar stopped syncing?

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

In this section, we’ll explore common troubleshooting sync steps specific to Help from FixTechGuide smartphones and tablets, covering both iOS and Android devices. Reconnecting the Calendar to Outlook only works if the calendar you’ve imported into Outlook is another Outlook Calendar. For iCloud and Google Calendars, the issue will persist, as calendar updates will take up to 24 hours to reflect in Outlook Calendar.

How to Check if Shared Calendar is not Syncing with Outlook?

Always ensure you have a backup of your data before making significant changes to your email configuration. Remember to restart your device after installing updates to ensure all changes take effect. If there's a feature you think is missing from the Mail and Calendar apps, or if a feature in isn't working properly, you can provide feedback directly to the Mail and Calendar team. If your password isn't the problem, you might have a certificate error.

Which email app are you using?

Below are the solutions you can follow to troubleshoot or fix the shared calendar syncing problem with Outlook. When your Outlook calendar isn’t syncing properly, it can throw your entire schedule into disarray. 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. Sometimes an error appears in the Mail and Calendar apps when the apps try to sync new email or calendar events.

How to fix Outlook Calendar sync issues on iPhone or iPad

If your primary Outlook Calendar account is not syncing, you can try to remove the account from your device, and add it again. Google Calendar not syncing with Outlook is not fixable by switching any settings in Google Calendar or Outlook. The only way to fix Google Calendar not syncing with Outlook Calendar is through the use of a Calendar Sync tool. Calendar Sync Tools use the official Outlook and Google Calendar API to automatically sync calendars. If your Outlook Calendar suddenly stopped syncing, you need to read this article. Let’s go over how to fix Outlook Calendar not syncing, so your schedule is synced across all your calendars.

Resolve sync issues in Mail and Calendar apps in Windows 10

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. 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. When multiple users make changes to the calendar simultaneously, conflicts can occur.

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Pub: 05 Oct 2025 11:38 UTC

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