Change DAG witness server and witness directory

The task is to change the Exchange Server DAG witness server to another server. Why is that? One of the reasons is that the witness server is not booting anymore. Another reason is that you want to decommission the server. This article will teach you how to move a DAG witness server and witness directory to another server.

Table of contents

• Where to place the DAG witness server?
• Move witness server and witness directory
• Configure DAG permissions on a new server
• Change DAG witness server with PowerShell
  • Get DAG witness server
  • Change DAG witness server and witness directory
  • Verify DAG witness server
• Change DAG witness server in Exchange Admin Center
  • Get DAG witness server
  • Change DAG witness server and witness directory
  • Verify DAG witness server
• Conclusion

Where to place the DAG witness server?

The question that you ask yourself is: Where do I need to place the DAG witness server?