I have been trying to install my HP J480 all-in-one for almost two years. On my networked Vista PC it installed without a hitch, including the HP Solution Center which handles scanning, faxes, etc. The XP SP3 installation quits at about 90%, with the message “There was a problem installing hardware HP OJ J6400 series. The specified port is unknown.” It turns out that I can print (but not scan or fax) successfully. When I look at the properties for the printer and check the port settings it show the same ethernet TCP/IP port used by my Vista PC. What failed to install completely is the Solution Center software. Clicking on that desktop icon yields the message “No HP devices have been detected” and then closes.
I went to the ethernet connection after many, many attempts at uninstalling and reinstalling (with latest HP software from their site) using the USB connection. HP support could not solve the problem. Neither could various HP forums where I found dozens of people with similar problems with a host of HP printers. To complicate matters, when I reboot the PC I get this message from Windows: “Generic Host Process for Win32 Services has encountered a problem and needs to close.” This message appears two or three more times until bootup is complete. Interspersed with those messages is one about a failure to install HP J6480. Searching Microsoft KB for answers produced nothing useful. (Yes I did “clean boot”, played with Msconfig, etc.) After this bootup nonsense is finished the system operates normally. And I can print in B&W and color!
I am looking to this newly expanded forum for help.
HH