When I connect the Keil unit, it enumerates as an "unknown device" with no driver, rather than as a USB controller. When I try to install the driver (I see keil\ARM\ULINK\keilulx.inf on disk, I get the following message: Windows encountered a problem installing the driver software for your device Windows found driver software for your device but encountered an error while attempting to install it.
Keil ULINKpro
One of the installers for this device cannot perform the installation at this time.
I can't get past this. I've uninstalled and reinstalled the software (both the latest version (with the really confusing pack installer) and 4.72a and rebooted my PC. I've uninstalled/disabled/disconnected/reconnected the JTAG but nothing helps.
Are you using a Windows version which requires signed drivers...?
Have you contacted Keil support?
I'm using Win8, but I did disable signed driver enforcement and tried to install, but I get the exact same error. I haven't tried Keil support though.