This issue has been bugging me since like forever! I have got two computers, which both run Windows 7 SP1, and a printer attached to one of them (the one with the printer has got Home Premium x64 and the other one has Ultimate x64, not sure that this. matters though). So yeah, what I've been trying to do is add the printer as a network printer on my Ultimate x64 Pc via Control Panel. The thing is, I can't do it as it gives me an error (Windows cannot connect to printer with error code 0x000003e3). The printer is an HP Officejet 4500 G510a-f. Now, before you post any suggestions, don't tell me to remove SP1 from the Pc with the printer, as some on the Microsoft forums have suggested, because I simply don't want to do that. I'd like a solution where I don't have to remove it. Thank you in advance.