Overview/Introduction
Removing Additional Mailboxes in Classic Outlook for Desktop
Prerequisites
- Classic Outlook desktop application installed and configured
- Active email account configured in Outlook
- Access to the mailbox you wish to remove
Environment
- Microsoft Outlook (Classic/Desktop version)
- Windows 10/11
- Microsoft 365/Exchange accounts
Details
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Open Microsoft Outlook.
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Click File in the top-left corner of the window.
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Select Account Settings → Account Settings.
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In the Account Settings dialog box, make sure you're on the Email tab.
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Select your email account from the list and double-click it.
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Click the More Settings button in the bottom-right corner.
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In the new dialog box that appears, click the Advanced tab.
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Under the Mailboxes section, select the additional mailbox you want to remove.
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Click the Remove button.
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When prompted to confirm, click Yes.
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Click OK to close the Internet Email Settings dialog.
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Click Next and then Finish to complete the process.
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Click Close to exit the Account Settings dialog.
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Restart Outlook for the changes to take full effect.
Verification
After completing the procedure, verify the mailbox has been removed by checking the folder list in the navigation pane - the removed mailbox should no longer appear.
Troubleshooting
If the mailbox still appears after removal:
- Force close Outlook completely and restart
- Clear Outlook cache by navigating to %LOCALAPPDATA%\Microsoft\Outlook and renaming the .ost files
- Verify permissions in Microsoft 365 Admin Center or Exchange Admin Center
- Check if the mailbox is added through Auto-mapping in Exchange
Notes
- Removing a mailbox only removes it from your Outlook view; it does not revoke permissions
- In some environments, mailbox configurations may be controlled by Group Policy
- If the mailbox was added through Auto-mapping, you may need administrator assistance to remove the permissions
FAQ's
See Also
For additional assistance, please submit a support ticket through the IT Service Desk portal.