RDS - Connecting to the RD Connection Broker Server

[Joel]

Hi Guys, has anyone ever come across this error?

In brief we cannot access the RDS Session hosts settings within server manager.
On occasion we have to log off users and do so via server manager > remote desktop services > then log off a user from a session.

Recently however we've been having an issue which is only fixable by rebooting the server. See below:

Whilst we have this error, all users are able to work fine and without a problem but from our own admin perspective cant do anything!

All services are running and I cant overcome this issue! Any pointers would be helpful.
Thanks

[DustinB3403]

Looks like 2012 R2, am I correct? Have you tried reinstalling the services?