Right-click on Fallout 3.exe and click on Properties.Right-click on Fallout 3 and choose Properties. With high integrity access, Fallout 3 can full use of its features, so run it as an administrator to ascertain if this fixes your crashing. The privilege issue could be the rationale for crashing. Relaunch the sport and check whether it solves the matter.įix 3: Change compatibility and run Fallout 3 as administrator.Add iNumHWThreads=2 beneath it, then Save the change.Change the bUseThreadedAI=0 into bUseThreadedAI=1.In the LOCAL FILES tab, click BROWSE LOCAL FILES.Right-click on Fallout 3 and click on Properties.