Routing and remote Acces

an error occurred while trying to start Routing and remote access service on
PASARGAD-RADIUS.For more information about the error see Event Virewer.
Right-click the My Computer icon on your windows desktop,and Then click manager .in the computer Mangaement console click Event Virewer

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Routing and remote acces cannot be started because pf the following error. please see
event log for more information
The service has returned a service-specific error code