Hi, I'm trying to unsinstall Exchagne 2010 but it is failing because it thinks there is an active mailbox. I had moved a test mailbox to the location and since removed it. However when I attempt to uninstall I get this error below. Mailbox Role Prerequisites Failed Error: Uninstall cannot continue. Database 'Mailbox Database 2103615544': This mailbox database contains one or more mailboxes or arbitration mailboxes. To get a list of all mailboxes in this database, run the command Get-Mailbox -Database <Database ID>. To get a list of all arbitration mailboxes in this database, run the command Get-Mailbox -Database <Database ID> -Arbitration. Before you can remove this mailbox database, you must disable, move, or remove user mailboxes and move arbitration mailboxes. Recommended Action: http://go.microsoft.com/fwlink/?linkid=30939&l=en&v=ExBPA.4&id=4a96fd69-9cec-4a48-9571-5c9e8ab3cfe9 Elapsed Time: 00:01:06 Any suggestions on how to work thorugh this. Thanks, ADam

Run this command first to disable the arbitration mailboxes: Get-Mailbox -Arbitration | disable-mailbox -arbitraion -DisableLastArbitrationMailboxAllowed:$true

Hi Mike, Thanks for your reply. I get the error below when I run the command PS] C:\Windows\system32>Get-Mailbox -Arbitration | disable-mailbox -arbitraion -DisableLastArbitrationMailboxAllowed:$t rue The input object cannot be bound to any parameters for the command either because the command does not take pipeline in put or the input and its properties do not match any of the parameters that take pipeline input. + CategoryInfo : InvalidArgument: (Microsoft Exchange Approval Assistant:PSObject) [Disable-Mailbox], Par ameterBindingException + FullyQualifiedErrorId : InputObjectNotBound,Disable-Mailbox The input object cannot be bound to any parameters for the command either because the command does not take pipeline in put or the input and its properties do not match any of the parameters that take pipeline input. + CategoryInfo : InvalidArgument: (Microsoft Exchange:PSObject) [Disable-Mailbox], ParameterBindingExcept ion + FullyQualifiedErrorId : InputObjectNotBound,Disable-Mailbox The input object cannot be bound to any parameters for the command either because the command does not take pipeline in put or the input and its properties do not match any of the parameters that take pipeline input. + CategoryInfo : InvalidArgument: (Microsoft Exchange Approval Assistant:PSObject) [Disable-Mailbox], Par ameterBindingException + FullyQualifiedErrorId : InputObjectNotBound,Disable-Mailbox

Sorry, typo in parameter name, it should be: Get-Mailbox -Arbitration | Disable-Mailbox -Arbitration -DisableLastArbitrationMailboxAllowed:$true

I've got the command to run without error and I can now see the removed mailbox in disconnected mailboxes. Although I still can't progress through to uninstall Exchange. I"m still getting the orginal error message.

And you have no user mailboxes? If you run Get-Mailbox does anything else show up? Also, delete any move requests: get-moverequest | remove-moverequest

THat's given me a list of all mailboxes in the domain. None of which have been moved. These users are also visible in EMC under mailboxes. The process thus far had been to intall Exchange 2010 and move a single mailbox which at the time was visible along with the other mailboxes. I sent a test email whilst the 2010 box is off sucessfully as a test to ensure that my mailbox was still on the 07 machine. Other then completing the install of 2010 and moving a single test mailbox no other changes have been undertaken at this stage. Thanks, Adam

Get-Mailbox -Server Server_Name -- Ed Crowley MVP "There are seldom good technological solutions to behavioral problems." . "Agilbert2003" wrote in message news:17f1a288-8970-4b76-b41a-bdf48dd8a3c1... THat's given me a list of all mailboxes in the domain. None of which have been moved. These users are also visible in EMC under mailboxes. The process thus far had been to intall Exchange 2010 and move a single mailbox which at the time was visible along with the other mailboxes. I sent a test email whilst the 2010 box is off sucessfully as a test to ensure that my mailbox was still on the 07 machine. Other then completing the install of 2010 and moving a single test mailbox no other changes have been undertaken at this stage. Thanks, Adam Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

Thanks Ed I was getting stuck on the DiscoverySearchMailbox.

HI, YOu can remove discovery mailbox using below Command. get-mailbox -Identity *discovery* | Remove-Mailbox Regards Chinthaka Shameera | MCITP: EA | MCSE: M | http://howtoexchange.wordpress.com/