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Opened Nov 30, 2025 by Lieselotte Wilcox@lieselottewilc
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Repair Outlook Data Files pst and .ost

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This blog will provide a complete guide on how to repair or rebuild damaged Outlook profiles in Outlook 2003, 2007, 2010, 2013, 2016, 2019 or 2021 for Office 365 or Exchange accounts. Users can easily understand the process, as the solutions explained in this blog are simple and reliable. If the Inbox Repair tool has failed to repair the PST file, it means that the file is large (larger than 2 GB) or severely damaged. In this post, we have discussed the steps to repair a corrupt or damaged profile in Outlook 2021, 2019, 2016, 2013, 2010, 2007, and Office 365. We have also mentioned some tips on how to further troubleshoot and fix the issues with Outlook.

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Press Windows + R key, type ‘Outlook.exe /safe’ in the Run window, and click the OK button or press the Enter key. If the issue is resolved, try disabling the add-ins as there could be faulty or incompatible add-ins causing the problem. Restart Outlook normally to check if the issues or errors you encountered are resolved. When using this solution to recreate or rebuild an Outlook profile for an Office 365 or Exchange account, please make sure that Outlook and its related programs are closed. The steps to access the repair tool vary depending on your operating online Outlook email repair utility system.

Fix your Outlook email connection by repairing your profile

Close Outlook then go to ~/Library/Group Containers/UBF8T346G9.Office/Outlook/Outlook 15 Profiles/ and delete and recreate Outlook profile on Mac. Restart Outlook and it will prompt you to create Outlook profile repair and recovery steps a fresh profile without any damaged data. Microsoft provides ScanPST.exe, also known as the Inbox Repair tool, to repair inconsistent or damaged PST files and resolve common errors.

Rebuild or Recreate Outlook Profile for Office 365 or Exchange Accounts

If you're using an Exchange email account, you can delete the offline Outlook Data File (.ost) and Outlook will recreate the offline Outlook Data File (.ost) the next time you open Outlook. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. If a Microsoft troubleshoot Outlook synchronizing folders error 365 application such as Word or Excel isn't working correctly, sometimes restarting it will fix the problem. Once you have performed all the steps, restart Outlook to apply the changes.

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Maintaining a healthy profile is crucial for smooth email communication, better performance and reduced chances of errors or data loss.The Lost and Found folder contains any folders and items recovered by the repair tool that Outlook can't place in their original structure.Users can easily understand the process, as the solutions explained in this blog are simple and reliable.It includes things like email address, password, data storage location, and sync settings with mail servers such as Exchange, IMAP or POP.Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Maintaining a healthy profile is crucial for smooth email communication, better performance and reduced chances of errors or data loss. By following these practices like regular backup and timely updates can avoid common issues. If you face any Outlook profile corruption issues then you can opt automated approach as it can manage large size Outlook mailbox data and no risk of data loss. If you are having a problem with your Outlook profile, try repairing it.

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Reference: lieselottewilc/office-365-sync-problems-and-login-fixes1992#2