The mailbox migration is in progress. Migrations can take several hours depending on mailbox size and internet connection speed. You can run the Get-MoveRequestStatistics cmdlet in PowerShell to check the progress. If it seems that the progress has stalled, you can run the diagnostic again.
The mailbox database '{1}' on server '{0}' has no record of being backed up. Click on the link 'get help fixing this issue' ...
The mailbox database '{1}' on server '{0}' hasn't been backed up in last {2} hours, LastFullBackup time:{3}, LastIncrementalBackup ...
The mailbox database '{1}' on server '{0}' isn't configured to mount on startup of the Exchange Information Store service. ...
The mailbox database '{1}' on server '{0}' wasn't backed up in the last {2} hours, LastFullBackup time:{3}, LastIncrementalBackup ...
The mailbox migration is in progress. Migrations can take several hours depending on mailbox size and internet connection ...
The mailbox you are trying to convert to shared mailbox belongs to an user that has an administrator role assigned. In order ...
The mailboxes that have been disabled, but which still remain on the servers for a period of time as defined by the mailbox ...
The MaxFieldLength HTTP parameter on server '{0}' hasn't been set to 32768. In large environments, the absence of this value ...
The maximum '{0}' message size is set too low for your Exchange organization '{1}'. Current maximum message size is {2} KB. ...