The software allows you to view solve Office 365 mailbox sync delays your repaired files and confirm before saving them. Confirm and click on "OK." Select the location where you want to save the file. Once the file is selected, now click on the "Repair" and begin the repair process. If you want to stop the repair process, click on the "Stop" button.

Solution 4: Disable Antivirus and Firewall Temporarily

However, serious problems might occur if you modify the registry incorrectly. For protection, back up the registry before you modify it so that you can restore it if a problem occurs. For more information about how to back up and restore the registry, see How to back up and restore the registry in Outlook data file cannot be accessed Windows. Now, we will verify the server settings to fix the Outlook synchronization error. The in-built Synchronization process happens when your OST or PST files get updated.

Solution 7: Create a New Profile

Sometimes this process gets corrupted, and this leads to sync errors. We recommend using the automatic process and fix the issue with Wondershare Repairit for Email. This excellent software is easy to use and fixes the issue quickly. Whether it's a bigger file size or smaller, the software can repair all file types with any level of corruption. Once you have completed the steps to fix Outlook sync errors, kindly check if the error has been fixed or not. Knowing the reasons behind the Outlook sync issues will help us to fix this problem and prevent issues in communication and workflow.

Solution 8: Rebuild Outlook Data File (OST)

The other solution to fix online Outlook email repair utility Outlook sync issues is recreating Microsoft Outlook profile. Follow each step carefully to resolve synchronization errors. Are you finding mismatches in the messages received in Microsoft Outlook in comparison to its web app?

Solution 1: Update the Outlook Application

If you are still facing this issue, kindly follow the solutions below to fix the sync issues in Outlook. 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. The tool does not interact with your mailbox on the Exchange Server.

• The OST Integrity Check Tool runs only on .ost files and can be used to diagnose and repair synchronization issues.
• 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.
• Before we know the solutions, we will understand a few common causes of the Outlook sync problem.
• As it is the replication of the existing information of Exchange Server mailbox, so the complete process does not cause any damage to the information.
• For more information about the maximum allowed share of server resources on Microsoft Exchange Server 2007, see A user is consuming their maximum allowed share of server.

However, the level of corruption is not a matter of concern with this excellent tool. Moreover, its user-friendly GUI interface is very easy to use. By default, Outlook 2007 caches only those shared folders that don't contain email (such as Calendar, Contacts, and Tasks). Here, we will discuss the 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.



Users can also convert OST files into various file formats, including PST, HTML, EML, MSG, vCard, etc. It also provides the option to export the Outlook OST file into Office 365 and Live Exchange mailboxes. This software also has a splitter option to split large-sized PST files into smaller ones, helping users prevent oversized PST file issues.