How to remove O365 alternate email address

If you need to change the AlternateEmailAddresses to $null for a user account or tenant admin you cannot, however, it has to be an array as below.

To check if the user has any alternate email address setup, use below command:

Get-MsolUser -UserPrincipalName email[at]contorso.com

To set alternate email address for a user as $null use the below command:

Set-MsolUser -UserPrincipalName email[at]contorso.com -AlternateEmailAddresses @()

The @() will create an empty array.

More details about empty PowerShell arrays here.

Adrian

Senior Engineer at Computer Assistance Oxford

How to remove O365 alternate email address

Adrian

Contact Us

Site Links

How to upload files to Nextcloud with PowerShell

Remove Microsoft Teams Groups from Global Address List (GAL)