Benderass 0 Posted March 1, 2000 When I try to run some setup or DOS based programs I get a 16 bit Subsystem error that states: SYSTEM\CurrentControlSet\Control\VirtualDeviceDrivers. VDD. Virtual Device Drive format in the registry is invalid. Then I can either Close or Ignore, it seems to work if I ignore but the error is getting annoying. Any help fixing this would be greatly appreciated Share this post Link to post