I have no clue how Factorio could cause this, we dont even use microphone input. More people are reporting this for other games.

Do you have a Logitech headset ? Try the solution mentioned here: https://www.reddit.com/r/blackops3/comments/3ryi3b/game_mutes_my_mic_everywhere/

Also try this: Right ...

TruePikachu wrote:Is the microphone set to allow applications to take exclusive control over it?

No, no one application can take over it.

No other steam games causes this. Standalone also has this issue. Steam is not causing this (was closed during standalone test).

While playing Factorio I normally chat with friends over Skype, Discord, and Teamspeak. However, around the update to 0.16.X My mic will all of the sudden just stop submitting sound to these applications. This only happens when Factorio is running. In discord, reselecting the mic will cause it to ...