rfa.Īnd so I did just that for sound.rfa and music.rfa, launched the exe without the Windows version lying and voila! it worked.Īnother thing I noticed when comparing the processes was that one process had only one thread, the other one two threads (one seemed to be audio related), but not very sure if that leads me anywhere, but one vague idea is that the. Now I remembered from somewhere that in BF 1942 and Vietnam you could extract the files (to game root directory) and delete the. For fun I tried swapping names of sound.rfa and sound_001.rfa, but that didn't really help as then I had two instances of sound_001.rfa. One the audio-missing process there were 2-3 file handles open for music.rfa and sound.rfa. Then I compared running the game with that version lying vs the normal one and checked with Process Explorer the two processes and found something interesting. Now simply lying about Windows version is pretty good fix, because there is no extra layer or virtualization. Then I filtered from all the options, that only one is needed: WinNT4SP5VersionLie, which basically modifies GetVersionExA to return Windows NT. Using ACD I got another option: 'Windows NT', which also worked (XP still did not).

I digged deeper on this one and downloaded a tool called 'Application Compatibility Toolkit' (ACD) to see what does that compatibility give exatly.

So one of the workarounds is running BfVietnam.exe with Windows 98 compatibility mode (XP is not enough). And I think the problem goes back to Windows Vista (or even XP SP3). Battlefield Vietnam is missing some audio, like radio commands and vehicle music on Windows 10.

Battlefield vietnam windows 10