(It is conceivable that that got copied over from a Windows XP computer that had it, so it might be a 32-bit version.) I am not sure how to uninstall that Bonjour manually. ' The installed Bonjour is version 2.0.4.0 with a date of. That did not work, either, as the message related to my failed installation of Safari for Windows came up here: 'This installer is intended for 32-bit versions of Windows. The uninstaller started up but quit, reproducibly, in the middle of the process, so that never got uninstalled. The 'Uninstall or change a progam' Control Panel shows two versions of Apple Mobile Device Support: 3.3.0.69 and 5.2.0.6.

I encountered a couple of problems in trying to do so. (which was for a different symptom, however). I started trying to follow the advice given here to uninstall various Apple software for Windows: