It’s annoying. “bonjour service failed to start” I’ve had this a few times in the last few months on Windows 7.
There seem to be loads of people with this problem on blogs spouting incorrect solutions involving registry permissions, UAC and other non working fixes.
1. download iTunes, save it to your computer. Ideally to your desktop
2. Open a command line and navigate to where you saved the file (using ‘cd Desktop’)
3. Run itunessetup.exe NO_BONJOUR=1
or itunes64setup.exe NO_BONJOUR=1 (dependant on which one you have)
4. there is no step 4