Icinga for windows (icinga powershell framework) provides some agent pairing functionality, which is currently failing on your side because of connection issues.
Some questions first:
Is this the first agent you are trying to connect?
Do linux agents work with your master setup?
Are all the firewall rules in place?
Is 172.30.74.104 your masternode?
here is also the latest webinar for icinga for windows
The powershell install method has some print installer command feature at the end. this would help finding out what you typed in and what you really want.
Also please look at the Formating Guide
Best Regards
Nicolas