One Drive trashed my Outlook

Point each POP account’s delivery location to the local, non-OneDrive PST that already opens, then disconnect any remaining OneDrive PST reference.

Reassign the POP delivery file

Do not move or reopen the PST again if it is already stored locally and visible in Outlook.

1. In classic Outlook, select File → Account Settings → Account Settings.
2. On the Email tab, select the first POP account.
3. Select Change Folder.
4. Expand the local PST that currently opens, select its Inbox, and choose OK.
5. Repeat this for every affected POP account.
6. Open the Data Files tab:
   • Confirm the active/default PST path is outside the OneDrive folder.
   • Select any obsolete PST entry whose path contains OneDrive, then select Remove → Yes.
   • If Outlook says that entry is the default, select the local PST first, choose Set as Default, restart Outlook, and then remove the OneDrive entry.

Removing an entry here only disconnects it from Outlook; it does not delete its email. Microsoft documents this delivery reassignment under Change Folder and the removal of the old OneDrive data-file connection.^1^

Restart Outlook and run Send/Receive All Folders. Outlook data files are not suitable for active storage in OneDrive because Outlook frequently holds them open while OneDrive tries to synchronize them.^2^

If error 0x8004010F remains

Repair the Outlook profile:

1. Select File → Account Settings → Account Settings.
2. On the Email tab, select the affected account.
3. Select Repair and complete the wizard.
4. Restart Outlook and test Send/Receive.^3^

If Repair is unavailable or does not fix it, create a new profile because 0x8004010F can represent a broken profile-to-data-file association:

1. Close Outlook.
2. Open Control Panel → Mail (Microsoft Outlook) → Show Profiles.
3. Select Add, assign a new profile name, and configure each account.
4. For a POP account, use manual configuration if necessary and select the existing local PST as its Outlook data file. Automatic setup may choose IMAP when the server supports both IMAP and POP.
5. Return to Show Profiles, select Prompt for a profile to be used, and open Outlook with the new profile.
6. Test sending and receiving before deleting the old profile.^4^

Keep the old profile and original PST until all mail, contacts, and folders have been verified.

Check the current Windows POP/PST fix

A separate Windows issue affected classic Outlook profiles using POP accounts or PSTs, particularly PSTs stored in OneDrive. Microsoft marks it fixed. Run:

1. Start → Settings → Windows Update.
2. Install all offered updates.
3. Restart when requested.
4. Repeat until Windows Update reports You’re up to date.^5^

Repair the PST only if folder access also fails

Because the PST already opens, do not start with Inbox Repair. Use SCANPST.EXE only if Outlook cannot open folders, reports data-file damage, or continues producing file-access errors after the delivery/profile correction. Back up the local PST first; the tool scans it and offers to repair detected errors.^6^

References

1. How to remove an Outlook .pst data file from OneDrive | Microsoft Support
2. What is Microsoft cloud storage?
3. Fix your Outlook email connection by repairing your profile
4. Error 0x8004010F when you try to send or receive email in Outlook 2010 or Outlook 2013
5. Classic Outlook profiles with POP accounts and PSTs hang after Windows updates on January 13, 2026 | Microsoft Support
6. Repair Outlook Data Files (.pst and .ost) | Microsoft Support