I'm moving the mailbox from one edb to the other, now after I move the user outlook was disconnected, and the event was below.
EVENT ID: 1022
Logon Failure on database "First Storage Group\Mailbox Database" - Windows account NT AUTHORITY\NETWORK SERVICE; mailbox /o=gpzgroup/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=i.upashantha.
Client Machine: OURSERVER
Client Process: edgetransport.exe
Client ProcessId: 0
Client ApplicationId: Client=Hub Transport
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
After the move I checked the mailbox location of the user still on the same edb, when I try to move again there's an error
Summary: 1 item(s). 0 succeeded, 1 failed.
Elapsed time: 00:00:12
Error was found for UserName (username@domain) because: Error occurred in the step: Opening source mailbox. Failed to open mailbox with error: The operation failed., error code: -1056749262
Exchange Management Shell command attempted:
'domain.local/P2/p/Username' | move-mailbox -TargetDatabase 'SERVER\Management\InactiveMails'
Elapsed Time: 00:00:12
I tried different approach like increasing the qouta even upto 30GB, restarting the server, but still the same.