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Knowing the reasons behind the Outlook sync issues will help us to fix this problem and prevent issues in communication and workflow. There can be several reasons for the Outlook synchronization FixTechGuide fix for stuck folders 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.

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 software or firewall can impact Outlook's synchronization process.

Free Methods to Remove Duplicate Items in Outlook 2016

You can temporarily turn off your antivirus software and firewall. After performing these steps, Outlook’s all folders will be synced to the server. If this method doesn’t work for you, navigate to other solutions. We have given you complete information about the synchronization issues folders in Outlook, and the ways to solve it manually and automatically. Check whether the numbers of items in the Offline and Server folders are the same. If it's the same, then synchronization is proper, but in case of variation, check profile settings.

Part 1: What you need to know about the issues with synchronization folders in Outlook?

• The tool compares items and folders in the file and in your mailbox and tries to reconcile synchronization differences between the files and the mailbox.
• Or do you receive an error message while synchronizing your offline folder?
• See your Exchange Server administrator for this information or permissions.
• However, the level of corruption is not a matter of concern with this excellent tool.
• This tool also helps users fix Outlook syncing issues by repairing OST or PST files and syncing the data smoothly.
• Incorrect Outlook settings can also be one of the reasons behind Outlook synchronization errors.
• Once you have completed the steps to fix Outlook sync errors, kindly check if the error has been fixed or not.

When these symptoms occur, or you have other problems synchronizing, the problem might be a corrupted .ost file. When synchronization issues occur in Microsoft Outlook or in Microsoft Outlook Web App (formerly Outlook Web Access), you may experience the following symptoms. If your account doesn't have full mailbox permissions to the secondary mailbox, you're prompted for the account credentials to the secondary mailbox. You may experience the following specific issues when you use Outlook after you make the configuration changes that are specified in this method. This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly.

For Outlook 2019, Outlook 2016, Outlook 2013, Outlook 2010, and Outlook 2007

Use the OST Integrity Check Tool (Scanost.exe) to check your .ost file for inconsistencies. In order to determine the number of folders and subfolders that are in a mailbox or folder, run the Get-MailboxFolderStatistics cmdlet. You must select the Folder List module on the Navigation pane to see the Sync Issues folder in your mailbox. Please whitelist stellarinfo.com and request to send the link again. The software allows you to view your repaired files and confirm before saving them. Confirm and click on "OK." Select the location where you want to save the file.



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 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 clear Outlook credentials manager updated. 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.





Any problems are noted in a message that has "OST Integrity Check" as its Subject. The OST Integrity Check Tool (Scanost.exe) is installed when you install Outlook in the following locations, as appropriate for the Outlook version that you are running. 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. In the main interface, you need to click on "Select PSF/OST file to repair" to upload the required file.



Firstly, we will discuss a few manual methods to resolve this Outlook error and share the stepwise procedure of each method to successfully fix synchronization issues. Now, let us start with the manual processes to fix Outlook syncing errors. 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. This software allows users to online Outlook email repair utility process numerous OST files at once without any size limitations. Moreover, it maintains the folder hierarchy and metaproperties of the data when processing Outlook data files. This tool also helps users fix Outlook syncing issues by repairing OST or PST files and syncing the data smoothly.