Or do you receive an error message while synchronizing your offline folder? All these scenarios indicate problems with the synchronization folder or corrupted .ost file. These syncing problems usually resolve Outlook not sending emails fast happen because of issues like a damaged Outlook profile, poor internet connection, or a corrupted OST file.

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 Not Sending or Receiving Email 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

After trying all the methods, is the outlook error synchronizing folder not resolved? You can try fixing it automatically with the Wondershare Repairit for Email. As PST files are bigger and so chances of the getting corrupted are high.

Solution 8: Rebuild Outlook Data File (OST)

After you make this change, none of the shared folders in the secondary mailbox will be available to you in Outlook when you're working offline. However, all folders in the primary mailbox will still be available to you when you're working offline. Conflicts with antivirus resolve Outlook not sending emails fast software or firewall can impact Outlook's synchronization process. You can temporarily turn off your antivirus software and firewall.

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.

How to repair errors by using Scanost.exe

• 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.
• It also provides the option to export the Outlook OST file into Office 365 and Live Exchange mailboxes.
• 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.
• Here, we will discuss the five manual methods to fix sync issues in Outlook or OWA.
• 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.
• Now, we will verify the server settings to fix the Outlook synchronization error.

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.



There can be several reasons for the Outlook synchronization error. Before we know the solutions, we will understand a few common causes of the Outlook sync problem. If disabling the software resolves the issue, then change your antivirus and firewall settings and add Outlook as an exception. Use the OST Integrity Check Tool (Scanost.exe) to check your .ost file for inconsistencies.