Update to my earlier post (note: using Vista 32-bit).....
I spoke to guy at Canon tech support. I had my Rebel XTi plugged into a USB
hub. He had me unplug the hub and unplug a Logitech QuickCam Pro 9000
webcam. Both the hub and the QuickCam were plugged into USB ports on the
back of the PC. He said the Rebel XTi needed to be plugged into a USB port
on the back of the PC. The EOS Utility software worked fine and the Rebel
XTi was still listed in the Portable Devices section of Device Manager.
I did some further testing and found:
1. With the Logitech QuickCam Pro 9000 unplugged from the PC, the Rebel XTi
and EOS Utility 2.2 worked like a champ when plugged into a USB port on the
back of the PC and a USB port on the front of the PC and even plugged into
the same USB hub that did not work earlier.
2. Plug in the Logitech QuickCam Pro 9000 into any USB port (on PC or USB
hub) and the Canon EOS Utility will not communicate with the Rebel XTi. This
includes even going into Device Manager and selecting to Disable the Logitech
QuickCam Pro 9000. In short, if the LogiTech is connected to the PC at the
same time as the Rebel XTi, then the Canon EOS Utility is not going to work.
My current solution is to plug my Rebel XTi USB cable into the USB hub and
plug the Logitech QuickCam Pro 9000 into the USB hub (easier for me to
reach). Use the QuickCam as usual (IM, Skype, etc.). When I need to
download photos from the Rebel XTi, I will just unplug the QuickCam before I
connect the Rebel XTi to its cable that remains plugged into the hub.
Hope this helps someone.
KevinP said:
I am having a similar problem. I installed all the Canon software from CD and
then installed all the Vista updates from the Canon website. Windows Vista
Ultimate recognized my Canon EOS Rebel XTi/400D camera and installed the
generic driver when the camera was first plugged in. The problem is that the
Canon EOS Utility program will open and then just disappear (it doesn't
recognize the camera). I have found that the Canon Rebel XTi/400D does not
have the "Communication" option in settings so the option described below
does not apply to this camera.
Any other ideas are appreciated.