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It also provides the option to export the Outlook OST file into Office 365 and Live Exchange work offline mode stuck mailboxes. This software also has a splitter option to split large-sized PST files into smaller ones, helping users prevent oversized PST file issues. With directory synchronization, you can continue to manage users and groups on-premises and synchronize additions, deletions, and changes to the cloud. But setup is a little complicated and it can sometimes be difficult to identify the source of problems. We have resources to help you identify potential issues and fix them. Incorrect Outlook settings can also be one of the reasons behind Outlook synchronization errors.

Method 4: Recreating the Outlook Profile

Here, we will discuss the FixTechGuide support for Office 365 five manual methods to fix sync issues in Outlook or OWA. Before finding solutions, we suggest that users check their internet connection. Sometimes, Outlook sync issues can arise because of poor internet connection. If you are still facing this issue, kindly follow the solutions below to fix the sync issues in Outlook. Firewalls and antivirus software might prevent you from syncing your email and calendar events.

Check the connectivity to your email server

After the files get repaired, restart the Outlook program to ensure that the Outlook syncing issues are resolved or not.If users are facing syncing issues in Outlook due to corrupt Outlook data files, they must choose a professional tool, like Shoviv OST to PST Converter Tool.Two-factor authentication helps protect your account by making it more difficult for someone else to sign in.After performing these steps, Outlook’s all folders will be synced to the server.The Mail and Calendar apps for Windows 10 don't support two-factor authentication.Moreover, it maintains the folder hierarchy and metaproperties of the data when processing Outlook data files.This can happen for days at a time, and then disappear for a day or 2, only to appear again.

When the user is signed into their mobile app, webmail, or the Troubleshoot Office 365 Sync and Login Issues Windows Mail app, they are able to receive email perfectly fine with those. The issue is occurring only in the Outlook program installed on Windows. To update from Azure AD Sync to Microsoft Entra Connect, see the upgrade instructions.

Methods to fix Microsoft Outlook syncing error

I ran the PSTscan tool to check for anomalies on the OST file (which it found and repaired but the issue still occurs). However, with one particular client no matter what changes are made these sync issue still occur. We're sorry you're having problems with the Mail and Calendar apps for Windows 10. To fix the issue, please try each of the following solutions in order.

Microsoft Outlook Sync issues

I’ve tried the Microsoft office uninstall tool provided by Microsoft (which deletes more items then just control panel uninstall). Below are the steps I’ve taken to try to resolve this issue. Two-factor authentication helps protect your account by making it more difficult for someone else to sign in. It verifies your identity using your password and a contact method (also known as security info). Outlook will show as connected to Exchange but is not receiving any new email. This can happen for days at a time, and then disappear for a day or 2, only to appear again.