'Add a New User' wizard fails to create a user mailbox on Windows Small Business Server 2011

On Windows Small Business Server (SBS) 2011, the 'Add a New User' wizard may fail to create a user mailbox.

On examining the C:\Program Files\Windows Small Business Server\Logs\adduser.log, you would see something similar:

[600] 110124.182639.8611: Messaging: Executed management shell command: get-MailboxDatabase
[600] 110124.182639.8954: Messaging: End Microsoft.WindowsServerSolutions.Messaging.Management.MessagingRunspace.StaticExecute
[600] 110124.182639.9013: Messaging: MessagingTaskException: Unable to find default mailbox database with name [] - Check access and verify if mailbox database exists - Error# (80004)
[600] 110124.182639.9170: AdminTME: Status: TaskId = MessagingTasks.TaskCreateMailbox, RootTaskId = TaskCreateUser, Success: True, Warning: True, Continue: True, Message: Unable to find default mailbox database. Make sure mailbox database exists and you have access to view the database.
This issue can occur if the 'Add a New User' wizard is unable to retrieve the mailbox database name. For this purpose, it looks for the registry key MailboxDatabaseName under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SmallBusinessServer\Messaging.
To resolve this issue, follow these steps:

1.) Launch Exchange Management Shell from an elevated prompt and execute the following command:


2.) Make a note of the database name listed under the Name column as shown in the example below. You would require this information in the later steps.

3.) Open Registry Editor

4.) Expand HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SmallBusinessServer\Messaging\

5.) Create a new String value as follows:

Type: REG_SZ
Name: MailboxDatabaseName
Value: The database name you obtained from Step 2 above

6.) Close Registry Editor

Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use for other considerations.

Artikelnummer: 2500559 – Letzte Überarbeitung: 03/18/2011 18:27:00 – Revision: 5.0

Windows Small Business Server 2011 Standard

  • KB2500559