Hello:
I am running FSX boxed and version 757 Captain III 1.404 downloaded on 6/25/19. I am also running Saitek equipment yoke, throttles, and pedals. I have noticed that the Autobrake function does not appear to be working at all in my system. I have made about 15 flights with the passenger and freight models. The autobrake switch goes immediately to Disarm when the wheels touch the runway, and there does not appear to be any braking action. I have researched this and there are threads on this with the earlier 757 release but I could not find a suggested workaround or solution. I have tried different combinations of sensitivity and null on the pedals with no effect. The switch goes to disarm on touchdown and no apparent breaking action. The touchdowns have been as desired with no bouncing or skipping. I arm the spoilers on final and they appear to function normally.
If this is a bug in Captain 757 III it should be addressed with hotfix soonest.
Thank you
Rick

Update: I experimented with different values for Auto_brake=__ in the aircraft.cfg file. The coded in value is auto_brake=5, which is manifest in the description above. I first tried auto_brake=0 and that produced no change. The autobrake switch goes to Disarm on wheel contact. Next I tried auto_brake =1 which may be the default FSX autobrake? This value seems to work. I tried 3 autoland approaches with autobrake set to max and it appears to be working. At least the switch doesn't cycle to Disarm on wheel contact. And the aircraft does slow down, but rather slowly. Then I hand flew a final and the same result. And the stopping distance was around 4500 ft. So it seems to me that auto_brake=1 does appear to have a positive result.
What say you Captain Sim?
Rick