I got the same issue. reinstalled the game and all other stuff. started the arma3.exe manually and got a windows error 0xc0000124. as far as i know a memory allocation issue. deleted every setting related to fred41's custom memory allocator but nothing worked. i am hardly trying to find fixes but the only thing what should work is a fresh windows. but i am still hoping that i will find a fix soon cuz i dont want to do the shitty recovery
Cheers m0ddixx