Unable to create shared mailbox

Question

Hello

Please i need your help on this issue.

Unable to create shared mailbox.

Unable to create shared mailbox because it complains there's already an email exist but it's not.

 

Answer 1

Hi @Enobong Essien , To resolve the error, you need to identify the object currently using the alias and decide whether to free up the alias or choose a different one for the new shared mailbox.

Step 1: Identify the Object Using the Alias

Using the Microsoft 365 Admin Center

1.    Log in to the Microsoft 365 Admin Center with admin credentials.

2.    Search for the Alias:

o   Use the global search bar to look for the alias in Users, Groups, Contacts, and Shared Mailboxes.

3.    If the alias is found, note its current usage (e.g., user mailbox, distribution group, or contact).

Step 2: Resolve the Conflict

Remove the Alias from the Existing Object

If the alias is no longer needed on the existing object:

1. Modify the Object Using PowerShell:

• Use this command to remove the alias:

Set-Mailbox -Identity "existing-object" -EmailAddresses @{Remove="alias@example.com"}

2. Verify the Change:

• Confirm the alias has been removed by re-running the Get-Recipient command.

3. Create the Shared Mailbox:

• Use the alias for the new shared mailbox in the Admin Center or via PowerShell.

Let me know if you have any query.