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. The most common cause of an out-of-date account is an incorrect password.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're using an Exchange account that requires advanced settings, you'll need to remove the account and add it again using advanced settings. To add the account using advanced settings, see Add an account using advanced setup.


Additional resources

Third-party firewalls or antivirus software might prevent you from syncing your email and calendar events. Check the software documentation to learn how to temporarily turn it off. While Outlook provides robust calendar features, integrating additional tools can significantly enhance your scheduling experience. 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. We’ll delve into the benefits of using this powerful app and highlight its features specifically designed to troubleshoot sync issues.

The scan log also identifies any situations that the tool could not resolve and that you must fix manually.If the connection is slow or inconsistent, you can restart the router or contact your internet provider/IT admin for help.These syncing problems usually happen because of issues like a damaged Outlook profile, poor internet connection, or a corrupted OST file.Try removing and re-adding the problematic calendar to reset the connection.
Benefits of Using Virto Calendar App

The tool compares items and folders in the file and in your mailbox and tries to reconcile synchronization differences between the files and the mailbox. The OST Integrity Check Tool does not change your mailbox on the Exchange Server. The tool records any differences in a scan log so that you can see what differences the tool found and resolved. The scan log also identifies any situations that the tool could not resolve and that you must fix manually. During the scanning process, security applications, like antivirus software or Windows Firewall might Fix Outlook Stuck On Loading Profile lock the Outlook data file, leading to the sync issues. To check if the security application is causing the issue, you can temporarily disable the antivirus program or Firewall and then update the folders.


Method 15: Recreate Outlook Data File (OST)

These sync hiccups can stem from various sources, including network connectivity problems, outdated software, or conflicts between different calendar services. If you have problems when you try to open your .ost file, you can use the Inbox Repair tool (Scanpst.exe) to diagnose and repair errors in your .ost file. The Inbox Repair tool can be used on both .ost files and on Personal Folders (.pst) files. The Inbox Repair tool scans the .ost or .pst file and makes sure that the file structure is intact. The tool also tries to repair the internal data structures, if it is necessary.
Check your advanced mailbox settings

Remember, patience is key when dealing with shared calendar sync issues. Remember, identifying the root cause is the first step to resolving your sync issues. In the following sections, we’ll dive into specific solutions to get your Outlook calendar syncing smoothly again. After rebuilding the OST file, it’s important to check for any missing mailbox data. If you find any missing items in the new OST file, you can recover them from the backup OST file using Stellar Converter for OST. This professional&nbsp