Site System Status Summarizer detected that the availability of the "%1" role on server "%2" has changed to Unknown.%12 Possible ...

%11Site System Status Summarizer detected that the availability of the "%1" role on server "%2" has changed to Unknown.%12

Possible cause: This Configuration Manager Server Role does not have an Availability State, it could not be accessed or it has not been updated.
Solution: Verify that the Site Server can connect to the registry of the site system.%0