If you are a regular user who depends heavily on the inbox application to perform daily operations, then Outlook not working or opening would be a big punch in the gut. Yes ✅ You can connect with our experts on WhatsApp for quick remote support and step-by-step troubleshooting guidance. Fix Outlook and Office365 Sync Issues Yes — Outlook will re-sync mailbox data from the server once you relaunch the app, as long as you use an Exchange or Office 365 account. The Inbox Repair tool is automatically installed with all English-language Microsoft Outlook installation options depending on your operating system.

Step 3 - Recover repaired items to a new .pst file

• Many users encounter startup freezes, profile loading loops, and crashes following major Windows patches or Office updates.
• The last option in this list is to repair the Outlook data file.
• This command deletes the custom folder views, restoring default configurations.
• For instructions about how to unhide files and folders, see your operating system documentation.
• Yes ✅ You can connect with our experts on WhatsApp for quick remote support and step-by-step troubleshooting guidance.
• Follow each method carefully, keep your account synced to Office 365, and maintain regular backups to avoid future data loss.
• If your Outlook OST file isn’t syncing properly with Office 365, you’re not alone.
• It’s harmless and resolves 30% of stuck startup issues according to Microsoft community reports.
• Opening Outlook in safe mode means that the application will only open all the necessary files to start the applications.

Run a full scan through the dashboard and receive a detailed report on configuration health, certificate status, and network connectivity. This solution FixTechGuide Windows update Outlook fix prevents display rendering errors that occur after driver or DirectX updates.

Can I delete my OST file without losing data?

If all the above methods were unsuccessful, you could take a closer look at the Outlook data file instead. If that does not work you can try using SFWare PST repair software. The last option in this list is to repair the Outlook data file.

Easily Repair Outlook 365 and Outlook 2021, 2019, 2016, 2013, 2010, 2007, & Other Versions

Always close Outlook properly, maintain smaller data files, and use the SCANPST tool or SaRA assistant for preventive maintenance. If errors persist, deleting the OST file or creating a new Outlook profile usually resolves all sync-related issues. It automatically detects corrupted data files, fixes profile errors, and reconfigures Outlook to restore connectivity with Office 365.

Repair Outlook OST File Not Working in Office 365 – Complete Fix (

You’ll see files ending with ".ost" — these store your cached mailbox data. The steps to access the repair tool vary depending on your operating system. To start, create a new Personal Folders (.pst) file entry in your profile. Then, you can move the recovered items to your new Personal Office 365 Sync Errors Fix Folders (.pst) file.