I am getting an error code CREATE failed - mailbox exists

Question

I am getting an error code CREATE failed - mailbox exists.

My outlook mailbox requires me to sync my entire

inbox when MS Outlook is open

Answer 1

Well of course that is the what it means. He wouldn't have posted it if his mailbox didn't already exist. I have the same issue with Yahoo on Outlook on a MAC. I've had it for ages. It disappears when I go to the new version of Outlook for MAC, but the new version doesn't have Notes so I cannot migrate. So I am in limbo until either you resolve the MAILBOX CREATE FAILED issue or you add Notes to the new version of Outlook for MAC.

Answer 2

Hello Randy Dacus

Hope you are doing well today!

Thank you for all the information above. Highly appreciated!

The error code “CREATE failed - mailbox exists” usually occurs when you try to create a mailbox that already exists. Here are some possible solutions:

• Check if the mailbox already exists: You can check if the mailbox already exists by logging in to your account on the web and checking if the mailbox is listed there. If it is, you can try to remove it and then create it again.
• Try creating the mailbox using PowerShell: You can try creating the mailbox using PowerShell. Here are the steps:

1. Open PowerShell as an administrator.
2. Run the following command: New-Mailbox -Name "<Mailbox Name>" -Alias "<Mailbox Alias>" -UserPrincipalName "<UPN>" -Database "<Database Name>".
3. Replace <Mailbox Name>, <Mailbox Alias>, <UPN>, and <Database Name> with the appropriate values for your mailbox

We look forward to your next response.

Regards,

Jason Guer

Microsoft Community Moderator

Answer 3

I happed just recently.

Mac pc

Yahoo.com

Outlook.com

Outlook disc install

Outlook downloaded about 3 years

Answer 4

Hello Randy Dacus

Thank you for posting in Microsoft Community.

I understand that you have an issue in regard to the error message you encountered about synchronization process of your mailbox. Let’s work together in finding the best resolution to this issue.

For me to better understand the issue, I’d like to ask a few questions:

• When did this issue happened?
• What is the domain of your account? Gmail.com, Hotmail.com or Outlook.com
• Are you using Outlook app or Outlook.com?
• What is the exact error message you encountered? Take a screenshot.
• What is the version of your Outlook app?

I would like to give you more information about this problem. However, we may first have to wait for the above response to ensure that we understand your concern correctly and that we can provide the necessary information.

We look forward to your next response.

Regards,

Jason Guer

Microsoft Community Moderator

Answer 5

Hello Randy Dacus, Good day!Thank you for posting to Microsoft Community. We are happy to help you.We are looking into your situation, we will update the thread shortly.Appreciate your patience and understanding and thank you for your time and cooperation.Sincerely,Eben Ezer Tres | Microsoft Community Moderator