Try re-installing the most recent version of HTC sync on your PC. I have had to do this several times and nobody at HTC or Sprint can tell me why.

 

same problem, re-installed HTC sync, and still the PC does not recognize the phone. Can't sync outlook contacts and calendar. anyone have a fix for this?

 

Dang

I am having the same problem sort of. The HTC Sync will sync with outlook but it will not recognize the Evo as a disk drive.

 

I plugged the usb cord into my phone then into my pc. It doesnt even bring up the detection screen like it use too when I first got the phone. So if any one can tell my why its doing this it would be great. Im running windows 7 and android 2.2

 

Don't know if this is something you've tried, but I found that on my PC if I use a third party USB cable, I get an error message saying I don't have the proper drivers installed, but if I use the USB cable that came with the Evo, it works. Might be worth a shot.

 

noticed this too

 

Also make sure you haven't killed the PC Synchronization process on the phone.

This has nothing to do with HTC Sync - it provides the usb detection and is in charge of giving that prompt dialog to connect as Charge only, Disk drive, etc.

 

How does one know if they killed the PC Sync Process? "Background data" and "Auto-sync" are both checked in settings.

 

Check running services ...or uninstall all task killers and start up monitors...reboot phone and pc ...try again.

 

Thanks Mr. Ed. My problem is now solved.