Plan B.

As a test, we are going to make a copy of your existing Outlook Profile and see if we can remove the missing data file from that Profile using the Control Panel Mail app.

Please read through all of these steps before you start and let me know if you have any questions or aren't clear on what to do. If something doesn't go as planned, just bail out and continue to use your existing Outlook Profile.

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Close Outlook

Control Panel -> Mail
[Show Profiles ...]

- Select your existing Outlook profile
[Copy ...]
New Profile Name: TEST 2025-03-25

- Select the TEST profile
[Properties ...]
- You will receive the same message that you get while opening outlook
[OK] and [Cancel] to get to the next window

[Data Files ...]
- Select the deleted Outlook data file
[Remove]
[Close]

- You are back at the Control Panel Mail main window
(o) Prompt for a profile to be used
[OK]

Start Outlook
Use the TEST Profile
Look around to ensure that all your data is there.
Make sure your can Send/Receive emals.
Close Outlook

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Reply back with the results.

Until we move to the next step, always choose your existing profile (not TEST) when starting Outlook.