Outlook Login Problems

How to Remove Duplicate Outlook Accounts That Cannot Be Deleted

Olivia Miller Oct 10, 2026 868 views

Question details

The user needs to remove phantom or duplicate email accounts in Outlook that are causing OST file errors and do not appear in Account Settings.

How to Remove Duplicate Outlook Accounts That Cannot Be Opened or Deleted

Product: Microsoft Outlook 365
Device & OS: not provided
Scenario: Managing Outlook email accounts when corrupted ghost accounts clutter the interface and trigger missing OST file errors.
Observed behavior: Outlook displays duplicate, non-working email accounts that cannot be accessed or deleted because they are missing from Account Settings. The application also reports that the associated OST files cannot be found or accessed.

Before you start

Before creating a new profile, ensure you export your current email rules if accessible, and close the Outlook application completely to prevent data conflicts.

Solution 1Recommended

Create a New Outlook Profile

Creating a new Outlook profile is the fastest and safest way to bypass corrupted duplicate accounts that refuse to be deleted.

When ghost accounts appear in your folder pane but are missing from your Account Settings, your current Outlook profile is likely corrupted. Attempting to manually repair the registry or delete OST files can cause further data loss.

Creating a fresh profile forces Outlook to start with a clean slate. For IMAP and Exchange accounts, all your emails and folders will automatically synchronize from the server once signed in. If you use POP accounts, you will need to manually link your existing PST file during the setup.

Export existing email rules

Open Outlook and navigate to File > Manage Rules & Alerts > Options > Export Rules. Save the rules file to your desktop so you can import it later.

Close Microsoft Outlook

Ensure Outlook is completely closed. You can verify this by checking the system tray or using the Task Manager to end any lingering Outlook processes.

Open the Mail setup in Control Panel

Click the Windows Start menu, type 'Control Panel', and open it. Change the view to Large Icons, then click on 'Mail (Microsoft Outlook)'.

Add a new profile

In the Mail Setup window, click on 'Show Profiles...'. Click the 'Add...' button, type a distinct name for your new profile, and click OK.

Set up your active accounts

Follow the on-screen prompts to sign in to your working Exchange or IMAP email accounts. If you have a POP account, select 'Manual setup' and choose 'Existing Outlook Data File' to link your current PST file.

Set the new profile as default

Return to the Mail window, select the 'Always use this profile' radio button, choose your newly created profile from the dropdown menu, and click OK. Relaunch Outlook.

Handling OST Files: Do not manually delete any OST files unless Outlook is fully closed and you understand the consequences. Missing OST files for active accounts will be rebuilt automatically when you sync your new profile.

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Frequently Asked Questions

Why do duplicate accounts appear in Outlook but not in Account Settings?

This usually occurs due to a corrupted Outlook profile or a synchronization glitch in the Windows registry. The folder pane retains the cached ghost account, even though the backend Account Settings correctly recognize that the account no longer exists.

Will I lose my emails if I create a new Outlook profile?

No. If you use IMAP or Exchange, your emails are securely stored on the server and will sync automatically when you sign into the new profile. For POP accounts, you just need to ensure you connect your existing PST data file to the new profile instead of creating a new one.

How do I fix the 'OST file cannot be found' error without creating a new profile?

While creating a new profile is recommended, you can sometimes fix this by closing Outlook entirely, navigating to the folder path mentioned in the error, and renaming or moving the problematic OST file. When you restart Outlook, it will attempt to recreate the file from the server.

Do I need to recreate my email rules in the new profile?

If you successfully export your rules from the old profile before making the switch, you can simply import them into the new profile via the Rules & Alerts menu. However, you may need to manually reassign specific folder mappings if your folder structure changed during the sync.

Outlook & Email Problems