Adding a Server 2012 R2 to deployment as an RD Gateway Server:

Configuration failed
Unable to save the RD Gateway settings.

Cannot find anything useful in the event log except:



Log Name: Microsoft-Rdms-UI/Admin
Source: Microsoft-Windows-Rdms-UI
Date: 18/01/2021 16:03:34
Event ID: 4119
Task Category: Deployment
Level: Error
Keywords:
User: domain\mighty
Computer: RDGW.domain.local
Description:
RD Gateway Configuration Failed on RDGW.domain.local With Error: Unable to create a Remote Desktop connection authorization policy on RDGW.domain.local. The error is 2147965515.
Event Xml:



4119
0
2
1
0
0x2000000000000000

19


Microsoft-Rdms-UI/Admin
RDGW.domain.local



RD Gateway
RDGW.domain.local
Unable to create a Remote Desktop connection authorization policy on RDGW.domain.local. The error is 2147965515.

Try sorting out the certificates the the deployment under edit deployment properties as it is usually certificates that make RD gateway server complain on 2012 R2

---