Therefore, now we will know the steps to repair the Outlook data file. 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. If you are still facing this issue, kindly follow the solutions below to fix the sync issues in Outlook.

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.

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• 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 Inbox Repair tool can be used on both .ost files and on Personal Folders (.pst) files.
• It scans your local copy of the .ost file and your mailbox on an Exchange Server.
• Moreover, it maintains the folder hierarchy and metaproperties of the data when processing Outlook data files.
• Incorrect Outlook settings can also be one of the reasons behind Outlook synchronization errors.
• There are various methods to resolve the Outlook sync issues, including manual and third-party solutions.
• 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.

Users can also try its free demo version in their system and process the first 50 items from each folder freely. Outlook and Office 365 sync issues can be frustrating but are almost always fixable. 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 OST Integrity Check Tool runs only on .ost files and can be used to diagnose and repair synchronization issues.

Step 4: Repair the Outlook OST File

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 reset cached Exchange mode the More information section of this article. After performing these steps, Outlook’s all folders will be synced to the server.

Step 10 – Rebuild Offline Cache (OST)

Outlook lets you FixTechGuide Office 365 troubleshooting manually control which folders sync with the server. If the test message sends successfully but folders don’t sync, move to the next step. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.

Disable Automatic Folder Subscription

Before we know the solutions, we will understand a few common causes of the Outlook sync problem. Re-adding the account forces Outlook to rebuild all folders and clear old FixTechGuide support for Office 365 stuck subscriptions. To view the scan log, start Outlook, and then open the Deleted Items folder. Any problems are noted in a message that has "OST Integrity Check" as its Subject. After these instructions, ensure the sync settings are correct and check everything is working well.