You cannot mount a new Exchange Server 2010 Mailbox database

Written by Allen White on. Posted in Exchange 2010, General

When you crreate a new mailbox database in exchange 2010 and then complete the process it trysd to mont the database you may see the error below.

Couldn’t mount the database that you specified. Specified database:
<test>; Error code: An Active Manager
operation failed. Error: The database action failed. Error: Operation
with message: MapiExceptionNotFound: Unable to mount database.





This is a known issue with Exchange 2010 and I have seen it in all service packs and updates. The error is due to exchange for some reason not seeing a global catalogue server correctley.

A work around is is to force your exchange server manually to look at your global catalogue server.

1) open up powershell and enter the following

After Preferred server enter the FQDN of a domain controller. Restart all exchange services or reboot then try and mount the store.You should then be able to mount your store.
Then I normally restart the Microsft Exchange toplogy services which will also restart all the exchange services. Then finally launch the exchange 2010 console and you will be able to mount your new exchange 2010 mailbox stores.
Allen White
Allen is a Consultant for ITPS in the North East of England and holds the following accreditations. MCSA, MCSE, MCTS, MCITP, CCA, CCSP, VCP 4,5 and HP ASE, AIS - Network Infrastructure.

ITPS provides strategic IT consultancy, implementation, data centre provision and unified communications, as well as support services and workspace and disaster recovery. If you require a consultation then please contact me via the contacts section or direct on 07931222991, add me on linkedin.

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Comments (1)

  • Enrique


    This actually worked! I had copied my VMs to a test environment and could not get database to mount. Kept getting An Active Manager
    operation failed error. After running the cmd, I tried restarting Microsoft Exchange topology but still did not work. After a reboot everything was mounted as expected. Thx!!!


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