Verify file register.exe is located in one of the following locations. If not, restore file from available backup.
Desktop Authority 9.1.x or prior:
C:\Program Files (x86)\ScriptLogic\Desktop Authority Manager
Desktop Authority 9.2.x or above:
C:\Program Files (x86)\Dell\Desktop Authority\Desktop Authority Manager
Desktop Authority 10.1 or above:
C:\Program Files (x86)\Quest\Desktop Authority\Desktop Authority Manager