EdbMails OST to PST Converter can help in these cases by recovering data from the inaccessible OST files and restoring them without data loss. 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.

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Start with basic network checks, enable Cached Exchange Mode, and repair your data files if needed. For persistent problems, rebuild your Outlook profile or use FixTechGuide’s free diagnostic tools to automate detection of authentication and IMAP errors in seconds. The other solution to fix Outlook sync issues is recreating Microsoft Outlook profile.

Step 2 – Update Outlook and Office 365

Firstly, we will discuss a few manual methods to resolve this Outlook error and FixTechGuide mailbox repair steps 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. Here, we will discuss the five manual methods to fix sync issues in Outlook or OWA.

Methods to fix Microsoft Outlook syncing error

It scans your local copy of the .ost file and your mailbox on an Exchange Server. 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. The OST Integrity Check Tool does not change your mailbox on the Exchange Server. The tool records any differences in a scan log so that you can see what differences the tool found and resolved. The scan log also identifies any situations that the tool could not resolve and that you must fix manually. There are various methods to resolve the Outlook sync issues, including manual and third-party solutions.

Repair Office 365 Installation

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. These syncing problems usually happen because of issues like a damaged Outlook profile, poor internet connection, or a corrupted OST file. If restarting Outlook or fixing the profile doesn’t work, converting the OST file is often the next step.

• To view the scan log, start Outlook, and then open the Deleted Items folder.
• For persistent problems, rebuild your Outlook profile or use FixTechGuide’s free diagnostic tools to automate detection of authentication and IMAP errors in seconds.
• Moreover, it maintains the folder hierarchy and metaproperties of the data when processing Outlook data files.
• Download the tool from Microsoft and run the Outlook diagnostic to auto-detect server and account issues.
• This tool also helps users fix Outlook syncing issues by repairing OST or PST files and syncing the data smoothly.

Outlook sync issues can be because of corrupted Outlook OST or PST files. Therefore, now we will know the steps to repair the Outlook data file. Incorrect Outlook settings can also be one of the reasons behind Outlook synchronization errors. This issue usually happens when Outlook cannot properly connect or sync with your mail server. In this FixTechGuide tutorial, we’ll explore the causes and give you clear, step-by-step solutions to fix it fast.

Fix Outlook Stuck on Synchronizing Subscribed Folders (2025 Guide)

When FixTechGuide email error solutions Outlook gets stuck on "Synchronizing Folders", it’s usually a sync or file corruption issue — not a permanent failure. By following these methods step-by-step, you can restore full email synchronization without reinstalling Outlook. FixTechGuide continues to help users resolve Outlook and Office 365 errors quickly and safely. After the files get repaired, restart the Outlook program to ensure that the Outlook syncing issues are resolved or not.



The tool also tries to repair the internal data Exchange connectivity diagnostic structures, if it is necessary. The tool does not interact with your mailbox on the Exchange Server. 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.