Quoting "Michael Aschenbeck" <m.g.aschenbeck@xxxxxxxxx>:
These suggestions may be a little basic, but worth a quick check. 1) Have you both made sure to turn off any Windows firewalls?
Firewall is off.
2) What do you point to with your CONDOR_HOST setting in your condor_config file? One thing you might try is to ping that machine, just to make sure they can communicate properly.
I checked that yesterday as well. CONDOR_HOST is correct (manager) and can be pinged from the problem machine.