After changing the settings, save them and restart Outlook. Now, manually sync your mailbox using the Update Folder button under the Send/Receive tab. All users are set to the domain.org upon being created.

Method 11: Clear Outlook Cache

This tool is designed to extract mailbox items from orphaned or inaccessible OST files. A large OST file can lead to performance issues and result in Outlook not syncing with the Exchange Server, disrupting your workflow. To resolve this, you can reduce the Outlook data file (OST) size. This can help optimize Outlook’s performance and fix the synchronization issues. As you can see, there are some common themes that can cause synchronization to stop working correctly.

Method 6: Reduce Outlook Data File (OST) Size

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. To resolve this, you can add Outlook and its related processes as exception in your security software or consider switching to a security application that is compatible with Outlook. You can experience sync issues in Outlook due to poor or no network connectivity. So, first check if your internet connection is stable and working properly.

Following this guide will help get your Microsoft 365 data syncing reliably again. Want to chat about how Microsoft 365 can benefit your business? These syncing problems usually happen because of issues like a damaged Outlook profile, poor internet connection, or a corrupted OST file. If restarting Outlook or fixing the profile doesn’t work, converting the OST file is often the next step. EdbMails OST to PST Converter can help in these cases by recovering data from the inaccessible OST files and restoring them without data loss. During the scanning process, security applications, like antivirus software or Windows Firewall might lock the Outlook data file, leading to the sync issues.



It provides a quick way to test the sync process on demand. I'm running into an issue with syncing my MS account across my MS 365 Office apps. I'm signed in on my windows account and my one drive seems to be working but when I open word, excel, onenote, etc. I get a "We're having trouble FixTechGuide email troubleshooting syncing. Click "Sign in again" to fix this issue" error at the top of window.

Microsoft 365 synchronization can fail due to connectivity, software bugs, data overloads, permissions, and more. Carefully checking the detailed error reports provided by Office 365 apps is crucial to diagnosing the problem. Forcing manual synchronizations is also useful when troubleshooting.

MS 365 account not syncing across office apps

Persevering with these troubleshooting steps will help identify and rectify many common Microsoft 365 synchronization problems. Let's now look at how to force manual synchronizations. If I put my laptop on airplane mode and remove my wired connection, the problem stops happening. This is what leads me to believe that the issue is sync-related.

OST Recovery and migration

But when I go to the Admin Center, I get this and have for about a week or so. Outside or recreating the user entirely, is there any thing else. If not, you can completely uninstall Microsoft Office and then reinstall it. Some 20-30% of the time, my changes on web/desktop will be accepted...

• We will cover determining the potential causes of sync failures, viewing detailed error reports, troubleshooting methodology, and steps to force synchronizations when needed.
• If the issue is resolved, it indicates that your antivirus software or Firewall is interfering with Outlook.
• It provides a quick way to test the sync process on demand.
• If the connection is slow or inconsistent, you can restart the router or contact your internet provider/IT admin for help.
• Restart the user’s computer and then recheck the license.
• To check if the security application is causing the issue, you can temporarily disable the antivirus program or Firewall and then update the folders.
• Let's now look at how to force manual synchronizations.

If the connection is slow or inconsistent, you can restart the router or contact your internet provider/IT admin for help. 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 OST to PST converter tool can extract data from the backup OST file and convert it into PST file, which you can easily import into Outlook. You can easily search for the missing items, select them, and save them in PST and other file formats, such as MSG, EML, RTF, HTML and PDF.

Method 11: Clear Outlook Cache

Once you have explored the basics like internet connectivity and updated software, examining any error reports becomes critical to zeroing in on the problem. Looking at the screenshot attached, I don’t see any indication that we have errors syncing. The user with the @domain.onmicrosoft.com email address doesn’t lock up everyday, but the onmicrosoft.com stays as the primary email address.