Error:
When you trying to add members to the DAG (Database Availability Group) you get the error as shown below:
![Adding a server to a dag, operation fails with error 0x6f7 Adding a server to a dag, operation fails with error 0x6f7](https://www.collaborationpro.com/wp-content/uploads/2015/02/Add-DAG-Error-300x262.png)
Solution:
As this is in my testlab I didn’t assign a default gateway to the MAPI network adapter. Go to the properties of TCP/IP and add in the DG, after this you will be able to add the servers to the DAG.
Hope it helps.