A user reported that he overcame the problem of an activation that wouldn't stick. (Success message, but trial status still showed.)

Download SubInACL here:

He then used a .cmd file with the following script:

cd /d "%ProgramFiles%\Windows Resource Kits\Tools"
subinacl /subkeyreg HKEY_LOCAL_MACHINE /grant=administrators=f /grant=system=f
subinacl /subkeyreg HKEY_CURRENT_USER /grant=administrators=f /grant=system=f
subinacl /subkeyreg HKEY_CLASSES_ROOT /grant=administrators=f /grant=system=f
subinacl /subdirectories %SystemDrive%\ /grant=administrators=f /grant=system=f
I'm not sure the /subdirectories command is needed or wise. I'd like to test to see which of the registry commands actually fix the problem.