exchange2019 profile corrupted.

Hi Genus Group

Thank you for reaching out to the Microsoft QA Forum.

Based on your description, I understand that you need to recreate a new Outlook profile due to profile corruption.

Please refer to the steps outlined in the Q&A Assist response, as it outlines the same approach, including creating a new profile and backing up any local data (such as PST files) if applicable.

You can also refer to the following article for step-by-step instructions on creating a new Outlook profile: Create an Outlook profile - Microsoft Support

As a precaution, I recommend backing up any locally stored data files (such as PST files) before removing the existing profile.

If you have any further questions or need additional assistance, please feel free to let me know.

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To fix a corrupted Outlook/Exchange profile and keep all data, create a new Outlook profile and ensure any local data is backed up or repaired before switching.

1. Back up existing local data (.pst/.ost)

• If the current profile uses POP, IMAP, or any additional .pst files, export or copy those data files before removing the profile. Removing a profile also removes its associated data files from the machine.
• For background on Outlook data files, see Introduction to Outlook Data Files (.pst and .ost).

2. Create a new Outlook profile Use Control Panel → Mail to create a fresh profile and connect it to the Exchange 2019 mailbox.

Classic Outlook for Windows / Outlook 2019/2016/2013/365:

1. Close Outlook.
2. Open Control Panel.
3. Select Mail.
4. Select Show Profiles.
5. Select Add.
6. Enter a profile name and select OK.
7. Configure the Exchange account (name, email address, password) and complete the wizard.
8. In Mail → Show Profiles, choose either:
   • Prompt for a profile to be used, or
   • Always use this profile and select the new profile from the dropdown.
9. Select OK and start Outlook with the new profile.

If Outlook starts and works normally with the new profile, the old profile was corrupted.

3. Recreate or repair OST (if needed) For Exchange Cached Mode, Outlook will create a new .ost file automatically for the new profile. If there are issues with the old .ost, it can be deleted (with Outlook closed) so Outlook recreates it when using the new profile:
4. In Outlook (before switching profiles), go to File → Account Settings → Account Settings → Data Files.
5. Note the path to the .ost file.
6. Close Outlook and all dialogs.
7. In File Explorer, go to that path and delete the .ost file.
8. Start Outlook with the new profile; it will download mailbox data from Exchange into a new .ost.
9. Repair any .pst data files and attach them to the new profile If there are .pst files (archives, local folders):
10. Run the Inbox Repair Tool (scanpst.exe) against each .pst to fix corruption. See Repair Outlook Data Files (.pst and .ost).
11. Start Outlook with the new profile.
12. Go to File → Account Settings → Account Settings → Data Files → Add and attach the repaired .pst files.
13. If needed, copy items (mail, calendar, contacts) from the .pst into the Exchange mailbox folders so they are stored on the server.
14. Remove the old profile (optional, after confirming data) Once the new profile is working and all needed data is available:
15. Close Outlook.
16. Go to Control Panel → Mail → Show Profiles.
17. Select the old profile and choose Remove.
    • Ensure all required data is either on the Exchange server or backed up in .pst files before removing, as cached content for that profile will be deleted.

This process recreates the Outlook profile against Exchange 2019 and preserves or transfers all data by backing up/repairing .pst files and letting Exchange resync the mailbox into a fresh .ost.

References:

• I can’t start Microsoft Outlook or receive the error “Cannot start Microsoft Outlook. Cannot open the Outlook Window”
• Terminated in error found in Outlook Sync Issues log files
• Outlook for Windows not responding, hangs, freezes, or stops working
• "Your mailbox has been temporarily moved on Microsoft Exchange server” message when an Office 365 user opens Outlook