While I am trying to connect to the server in PerformancePoint Dashboard Designer, I got a message saying "Unable to connect to server".
There may be two resons.
* The first reason is the services required to run the PerformancePoint server are stopped in the
Internet Information Services (IIS) Manger Application Pools.
Therefore to fix that issue, first go to the IIS Manger and select Application Pools.
Then the services run in the Application Pools will be shown and you will see the services
related to PerformancePoint server (PPSMonitoringCentral, PPSMonitoringPreview,
PPSMonitoringWebService) are stopped.
Start those services by click on it and selecting Start in the Application Pool Tasks.
* The other reason is the SQL Server Service is not started.
To fix it open the Sql Server Configuation Manager and start the relevant Sql Server Service
After that you will be able to connect to the server...