I have Unity 5.x and when DST adjusted on Saturday my server didnt adjust. Im not sure how that server manages time, I adjusted the time setting through windows and then the Unity applications ceased to work. After restarting Unity the time reverted back to the wrong time again. So Im guessing that it is polling its time from somewhere else and it has to be sync'd in order to work. I have looked at both my AD and EXCH servers and the time on there is correct. Anybody have any suggestions?