Microsoft Account Errors

Fix Cannot Add Existing Live Email as Microsoft Account Alias

WPS Content Manager Oct 10, 2026 869 views

Question details

The user is unable to add an existing Live email address as an alias to their current Microsoft 365 or Outlook account because the address is already tied to a different account.

Cannot Add an Existing Live Email as a Microsoft Account Alias

Product: Microsoft Account
Device & OS: not provided
Scenario: Attempting to consolidate Microsoft accounts or add a secondary Microsoft-domain email address as an alias to an existing primary account.
Observed behavior: The system rejects the attempt to add the existing Live, Hotmail, or MSN email address as an alias, displaying an error that the address is already taken or belongs to another account.

Before you start

Before modifying your account settings, ensure you are logged into the correct Microsoft account. Never close or delete an old account just to free up its email address, as this will permanently delete the address.

Solution 1Recommended

Create a New Outlook.com Alias

Since existing Microsoft domain emails cannot be transferred, you must create a brand-new Outlook.com address directly within your account to use as an alias.

Microsoft's security policies prevent transferring existing Hotmail, Live, Outlook.com, and MSN addresses between accounts. If an email address is already associated with a Microsoft account, it cannot be added as an alias to a different one.

Sign in to your account

Navigate to the Microsoft account page in your web browser and log in with your primary Microsoft 365 or Outlook.com credentials.

Access account information

Click on the 'Your info' tab at the top of the page, then locate and select 'Edit account info' under the Account info section.

Add a new alias

Click the 'Add email' link on the Manage how you sign in to Microsoft page.

Create the new email

Select 'Create a new email address and add it as an alias', type in your desired new email prefix, ensure the domain is set to @outlook.com, and click 'Add alias'.

Account Deletion Warning: Do not close the account holding your original Live email address in an attempt to free it up. Microsoft permanently deletes closed domain addresses, and they cannot be recovered or reused as an alias.

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Frequently Asked Questions

Can I delete my Live email from its current account and add it as an alias to my main account?

No. If you remove an existing Microsoft domain email (like @live.com, @hotmail.com, or @msn.com) from an account, it is permanently deleted by Microsoft and cannot be added to any other account.

Why do I get an error saying the email is already taken when adding an alias?

This error occurs because the email address you are trying to add is currently in use as a standalone Microsoft account or as an alias on another account. Microsoft domains cannot be reused across different accounts.

Can I link my two Microsoft accounts together?

Microsoft does not currently offer a way to merge or link two separate Microsoft accounts. You must manage them separately or migrate your data manually to your preferred primary account.

Can I add a Gmail or Yahoo email as a Microsoft account alias?

Yes. Unlike Microsoft domain emails, third-party email addresses like Gmail or Yahoo can be added as aliases to your Microsoft account, provided they are not already set as the primary alias of another Microsoft account.

Login & Account Issues