Hello,
our environment have Exchange 2013 with CU7 installed, and lately receive weird problem that is not persistent but it unexplained.
All databases mounted that are in DAG, all arbitration mailboxes good, in ADSIEDIT checked homeMDB, and it is not set, however, i dont know is this relevant because sometimes is failing, sometimes is success.
When we run user creation we randomly get error:
Cannot open mailbox /o=ORGANIZATION/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Configuration/cn=Servers/cn=SERVER/cn=Microsoft System Attendant. CategoryInfo: NotSpecified: (:) [Set-MailboxRegionalConfiguration],MailboxUnavailableException, FullyQualifiedErrorId: [Server=SERVER,RequestId=ba479b62-bda0-4c55-9347-9279f6121d62,TimeStamp=3/18/2015 7:57:29 PM] [FailureCategory=Cmdlet-MailboxUnavailableException] 45AC6FDA,Microsoft.Exchange.Management.StoreTasks.SetMailboxRegionalConfiguration
Googled many answers, tried many workarounds, and I'm out of ideas now, so any suggestion will be more than welcome!
Thanks,
Ivica