症状

When attempting to Installing Crowd as a Windows Service, the command prompt shows an error and the service is not installed:

Failed installing 'Crowd' service

原因

1. Windows Administrator privileges are required in order to install a service.
2. A previous Crowd service is still in place

ソリューション

原因 1

Run the command prompt as an Administrator to have the elevated privileges required to install the Crowd service.

原因 2

Remove the previous Crowd service and re-run the service installation