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In Exchange, we rebooted our servers in the lab and once they started up, one of the Exchange 2019 Servers was showing a ServiceDown error when checking the DAG status in Powershell.
https://www.collaborationpro.com/wp-content/uploads/2019/01/DAG1.png
The error is easy to fix but you can view more information on it by typing the following command:
- Get-MailboxDatabaseCopyStatus | fl
https://www.collaborationpro.com/wp-content/uploads/2019/01/DAG2.png
As you can see above the replication service is not started. Head over to Services.msc and you can see of all the services that one failed to start:
https://www.collaborationpro.com/wp-content/uploads/2019/01/DAG3.png
Once you start it and then run the above command (without the fl) it should show the database as mounted:
https://www.collaborationpro.com/wp-content/uploads/2019/01/DAG4.png
