I had the same error: 0xC0000005 - STATUS_ACCESS_VIOLATION
Just try to remove .dll files in the ARMA 3 DLL folder. Not sure if this will help but you can try.
https://forums.bistu...crashing/page-2
SG_Smokintodd thanks a lot!
I bought new PC (z170A, Skylake 6600k, gtx 960 4gb, Win. 10), and after 15 hours of playing KoTH I noticed exactly the same error. After that I spent a lot of time trying to fix it and I was very disappointed Arma. But your solution works.