Recently I started noticing that when attempting to create a new mailbox in Exchange 2010 I was receiving the error "Load balancing failed to find a valid mailbox database". I checked the provisioning by running the command "Get-MailboxDatabase
| ft Name,IsExcludedFromProvisioning". All my databases are set to "true". All I would have to do is run the command "get-mailboxdatabase | set-mailboxdatabase -isexcludedfromprovisioning $false" to enable the provisioning again. My
question is here, does this require any kind of reboot or setting the DAG into maintenance mode? These are prod servers and I would hate to run a command that might cause an unplanned downtime of any sort. I got a feeling that this is probably a quick simple
command and wont cause any issues, just want to confirm that this won't require any sort of planning before running.
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