(Image: [[https://www.thewindowsclub.com/wp-content/uploads/2025/02/Fix-Microsoft-Outlook-problems.jpg|https://www.thewindowsclub.com/wp-content/uploads/2025/02/Fix-Microsoft-Outlook-problems.jpg]]) 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 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. If the issue is resolved, it indicates that your antivirus software or Firewall is interfering with Outlook. My inbox is not syncing...HELP please 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.Remember, the repair process may take some time, especially for accounts with large amounts of data.If your Outlook calendar is not updating with meetings, it could be due to several reasons.Two-factor authentication helps protect your account by making it more difficult for someone else to sign in.When your Outlook calendar isn’t syncing properly, it can throw your entire schedule into disarray.While Outlook’s calendar sync usually works seamlessly across devices, mobile platforms can sometimes present unique challenges. 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." If you can sync your email when the firewall is turned off, you'll need to allow the Mail and Calendar apps through the firewall. Windows Defender Security Center is free security software that's included with Windows 10. Create an Email Group in Outlook for Faster Team Communication (Image: [[https://www.yodot.com/blog/wp-content/uploads/2018/01/infographic-1.jpg|https://www.yodot.com/blog/wp-content/uploads/2018/01/infographic-1.jpg]]) For teams looking to enhance their calendar management further, the Virto Calendar App for Microsoft 365 & Microsoft Teams offers a powerful alternative. Remember, changes to these settings might require you to restart Outlook or even your computer to take effect. Always ensure you have a backup of your data before making significant changes to your email configuration. It’s worth noting that sometimes, what appears to be a sync issue might actually be a delay. Allow Mail and Calendar apps through Windows Firewall How to force Outlook to sync manually? Remember, the repair process may take some time, especially for accounts with large amounts of data. To view the scan log, start Outlook, and then open the Deleted Items folder. Any problems are noted in a message that has "OST Integrity Check" as its Subject. Use the OST Integrity Check Tool (Scanost.exe) to check your .ost file for inconsistencies. When these symptoms occur, or you have other problems synchronizing, the problem might be a corrupted .ost file. (Image: [[https://www.lifeonnetwork.com/wp-content/uploads/2021/12/outlook.jpg|https://www.lifeonnetwork.com/wp-content/uploads/2021/12/outlook.jpg]]) How to Resolve Sync Issues in Outlook – A Detailed Guide An app password is used instead of your normal account password for apps that [[https://link.xinghua.plus/fixtechguidetroubleshootingblog198409|Email sync repair for Outlook 365]] don't support two-factor authentication. Before you begin, make sure that your device has the latest operating system and app updates. Try the general troubleshooting solutions in Troubleshooting Mail and Calendar apps for Windows 10. 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. For both systems, after making changes, restart Outlook to ensure the new settings take effect. 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. If you're using an Outlook.com, Microsoft 365, or Exchange account, you won't have advanced mailbox settings unless the account was set up using advanced setup. 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. Method 11: Clear Outlook Cache Remember, creating a service ticket usually requires admin privileges. If you’re not an admin, you’ll need to contact your IT department to create a ticket on your behalf. Remember to restart your device after installing updates to ensure all changes take effect. In essence, a well-synced calendar is not just a convenience—it’s a crucial tool for personal and professional success in our fast-paced, digital-first world. Troubleshooting Outlook Calendar Sync Issues When synchronization issues occur in Microsoft Outlook or in Microsoft Outlook Web App (formerly Outlook Web Access), you may experience the following symptoms. Now, manually sync your mailbox using the Update Folder button under the Send/Receive tab. Check with your email provider for instructions about how to create an app password for your email account. 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.