Hey Friends!
I too have similar problems: 1) My HP client security manager is stalling on opening it, so I cannot enter it properly (has NEVER worked properly) AND i have similar Device Access Manager problems: I cannot access external devices - since no authentication window shows up. This is a serious problem for my company.
I do not need Device Access Manager so I have tried to uninstall the program from programs list - but it seems to not want to be uninstalled.
Hope to get a solution
Thanks in advance :) -