====== Exchange 2013 Cannot open mailbox microsoft system attendant ======

While doing some Work on my Exchange 2013 server, a, for me, new error popped up:

For some reason it turned out my maildatabses weren’t mounted.

{{ :microsoft:exchange_2013_cmd_01.jpg?nolink |}}

See if your database/s are mounted. Important to remember the “-status” or the column will be blank.

<code bash>
Get-MailboxDatabase -status |select name,mounted
</code>

Mount all your databases and check status.

<code bash>
Get-MailboxDatabase | Mount-MailboxDatabase
Get-MailboxDatabase -status |select name,mounted
</code>