Oct 14, 2011  The problem is that the 20D drivers provided by Canon do not support a 64 bit operating system. I have an old laptop with 32 bit Vista that I use when I want to control the 20D via a computer.

Lourendo said: i would just install eos utility. That way you can shoot tethered.

Meaning you can control and operate the camera while connected to usb. It is convenient for studio work. You can also use the camera normally and preview shots instantly on a real monitor with adobe bridge or preview or whatever. Very useful on shots that are important. EOS Utility does not recognize older cameras in 'normal' making remote shooting impossible. Canon did not release camera driver for win 7 and win 7 itself doesn't have one. I use Windows 7 x64 and ran into the problem of non-existent drivers for the Canon 20D. Hp Drivers Pack Windows 7 32 Bit.

I have similar issue with a 20d win7(32). I accidentally pulled the USB out my PC during device driver installation.

'Unknown device' now shows in device manager. Tried uninstalling device and drivers and searched for updates to no avail. NB This camera asks for date/time reset each main battery removal/reinsertion and when I rebooted my system to see if I could rescan the ports to show the camera my PC freezes on boot and reads black screen command 'unable to boot time/date has reset. F1 to continue'.

I reset time and date enabling use of Google safety certificates however cannot find drivers - do you think the XP extension will work, have I fried my camera; is this time/date a virus??!

The problem is that the 20D drivers provided by Canon do not support a 64 bit operating system. I have an old laptop with 32 bit Vista that I use when I want to control the 20D via a computer. If you upgrade to the 7D, you won't have that problem as the 7D drivers do support 64 bit operating systems. Driver May In Canon Lbp 1210 Cho Win 7 64 Bit more. Alton (TN) wrote: I just attached my 20D to a new Windows 7 (64 bit) system.

It cannot be installed and apparently there is no update in the future. Has anyone else had this problem? Was there a way around it? Thanks, Alton. I think I had the same problem with my brother's PC running Windows 7.

I gave him my 30d last year and took the disk that came with that camera. We couldn't get some of them to function either and I believe it was a 32bit to 64bit issue. He uses PSE7 so didn't have a problem so we didn't try to upgrade the utilities off the Canon site. Have you tried to do that to up date all of them yet?

Since you have them installed I would hope the update would work. Other then that maybe you could find someone who has a new set of disk and install them on your PC. I'm looking at that issue now as I'm thinking about the upgrade to Mac Lion OS and some of the Canon utilities are not compatible.