I'm having problem with remote control the Win 7 machines. I would get
"Rights Authentication failed. The managed device was unable to contact the
Zenworks server." error message.

It looks like all Windows 7 machines have not been contacting the Zen server
recently eventhough they are all up and on the network. I am not having
problem with the Windows XP machine however.

I can reregister the Win 7 workstation and that would reestablish the
connection to the zen server but it would seem to stop communicating after a
day or so.

Any ideas?