It is a normal Outlook function, and these messages act as error-checking mechanisms for programs that use it for fix MFA prompts not working syncing email services. In this article, we will discuss the synchronization issues in folders, and the method to solve it manually and automatically with the excellent Outlook Repair software. If these methods do not resolve the issue, we recommend that you rebuild the .ost file. To do this, delete the .ost file, and then let Outlook download the information again from Exchange Server. For more information, see the More information section of this article.

Solution 4: Disable Antivirus and Firewall Temporarily

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. Outlook sync issues can be because of corrupted Outlook OST or PST files. Therefore, now we will Office 365 Sync Errors Fix know the steps to repair the Outlook data file. Sometimes because of a corrupted OST file synchronization process stops functioning properly and thus leads to error.

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)

In order to determine the number of folders and subfolders that are in a mailbox or folder, run FixTechGuide login issue guide 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.

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.

• All these scenarios indicate problems with the synchronization folder or corrupted .ost file.
• If you are still facing this issue, kindly follow the solutions below to fix the sync issues in Outlook.
• Each of these registered folders counts toward the objtFolder type limit on the server that's running Exchange Server.
• After these instructions, ensure the sync settings are correct and check everything is working well.
• After the conversion, you can import the PST into your newly created Outlook account via the Import Export wizard.
• Now, let us start with the manual processes to fix Outlook syncing errors.
• This software allows users to process numerous OST files at once without any size limitations.
• If these methods do not resolve the issue, we recommend that you rebuild the .ost file.

If you see any mismatch in the data, then the methods discussed in this guide will surely help you resolve the issue. When you add other mailboxes to your Outlook profile and enable caching of the shared mailbox folders, Outlook individually registers every folder in each cached mailbox. Each of these registered folders counts toward the objtFolder type limit on the server that's running Exchange Server. Items and logs not synced to your email by Microsoft Outlook are present in the synchronization issues folders.



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.