I am trying to install USB security software (by the name encryptstick) so that whenever I insert my pen drive into any laptop it does ask for a password. I downloaded onto my pendrive (as it was advised to run it on only pendrive which is to be password protected) and tried to run the software, but it is giving error message that " The handle is invalid". Can any body help me in running this .exe file and protect my USB drive. Or if any alternate method of protecting my USB is there please let me know. I am not well aware of computer application, so please explain in detailed manner. I am having administrative rights - this is for additional information for your suggestion.