Automatic Load Balancing Fails for New Exchange Mailboxes

Error:  Load balancing failed to find a valid mailbox database

Issue:

Workaround:

After “-Password” parameter please add “ -Database ‘Mailbox Database 1131857212′ “ and reran the cmdlet

Solution:

When we Veried the provisioning by running below cmdled it was True

Get-mailboxdatabase | ft name,isexcludedfromprovisioning

Disabling the isexcludedfromprovisioning

Get-mailboxdatabase | set-mailboxdatabase -isexcludedfromprovisioning $false

The IsExcludedFromProvisioning parameter has have two valid values, $True and $False. When you set this property to $True, the mailbox database is excluded from the automatic distribution process. When you set it to $False, the mailbox database is included in the automatic distribution process. The default value is $False.

When a mailbox database is excluded from automatic distribution, the only way to create a mailbox in, or move a mailbox to, the database is to use the Database parameter on the New-Mailbox and Enable-Mailbox cmdlets or the TargetDatabase parameter on the New-MoveRequest cmdlet.

More info isexcludedfromprovisioning Parameter :  http://technet.microsoft.com/en-us/library/ff477621(v=exchg.150).aspx