Good call with this article! I too had the same error with my Samsung Focus but I figured out that for some reason my route was not able to identify a device name, only the MAC address. (possibly a bug in WP7) Apparently Zune does not like this because
as soon as I used a static IP address for my phone's MAC address and gave it the name of my phone as recognized by Zune, it worked!
Cheers!
^^ THIS ^^
HTC HD7, Windows 7 on the desktop, and a Billion 7800 router.
It would seem Athix is 100% spot on with this. The router hadn't recognised the device name on the DHCP table, it was blank - so after assigning it a fixed host entry with device name (as listed in Zune) an IP (that is outside the range DHCP provides) and
the phone's MAC address it worked a treat!
Hardly a user friendly setup process - now lets just hope they hurry up and fix the bug that periodically causes Marketplace and Zune (on the handset) to refuse to launch until reboot....
Lovely mobile OS - as with all tech in it's infancy bugs are to be expected I guess, but come on M$..... sort it out or face getting a binary kicking by Apple...... and that sucks.