Microsoft responded to this issue here: Netflix - Dolby Digital 5.1 not working on Windows 10 Build 10240 - Microsoft Community
Type: Posts; User: edgevvater
Microsoft responded to this issue here: Netflix - Dolby Digital 5.1 not working on Windows 10 Build 10240 - Microsoft Community
Hey, I've got the same problem. Upgraded to Windows 10 so I could get the Netflix app and finally have Dolby 5.1 sound, but I can't get the audio to bitstream to my receiver... no Dolby icon lights...