Written by Thomas Speekenbrink
During the installation of a Synchronizer, you will be asked to enter your domain user+password for the user who will be running the service when the installation has finished. You might also browse for this user, but when you do so, you will only see the local machine.
This will happen when the Computer Browser service (in services.msc) is not running. Start the service and try again, as your domain will be searchable then.