The virus(Win32/Autorun) can delete or replace the BitLockerToGo.exe and autorun.ini that will cause I can'tencrypt my u-disk data...Who can upload these files that I can encrypt my u-disk. Thanks.BitLockerToGo.exe is a program used to transfer files from a removable drive encrypted with BitLocker Drive Encryption to a computer running Windows XP or Windows Vista. To use this program, double-click on BitLockerToGo.exe. For more information, see http://go.microsoft.com/fwlink/?LinkId=129765And I think it's BitLocker ToGo's bug, and I will feedback this issue. Happiness lies in the consciousness we have of it.

I'm not following your question here?If your system has been infected by a virus, it's not your system anymore. If you've been infected by a virus you will not be able to trust the machine unless you've restored to known good binaries.

Hello,If you are looking to use BitLocker to Go on your USB Thumb drive check out this little presentation on how to use it. Located here.That will give you the steps necessary to use BitLocker to Go on your device.Regards,~Alex T.~ ~Windows Desktop Experience MVP~