Voice chat not working

[Hellen Keller: American Sniper]

My voice chat suddenly stopped working today. No one in game can hear me, and I cannot hear anyone. I know because when I'm partied with my friend, he is able to hear people talking and I cannot. No icons appear in my bottom left corner when someone is speaking either, however the icon for myself speaking does. I'm curious if I was banned from voice chat for some reason, which is confusing because I've refrained from slurs and things like that, and it would confuse me that I was banned for foul language because I tend to be tamer in voice chat compared to literally everyone else, who tossing slurs left and right. If anyone has a fix for my voice chat issue, please let me know. I've already looked at trying to change my output-input device.

[=TAC= Stuermer]

This is the stuff I remembered, never had this problem, but maybe it helps you:

Turn on and off voice chat in menu:
- turn it off, save
- restart game
- turn it on, save
- restart the game

1. Windows settings:
- Navigate to Settings > Privacy > Microphone
- Make sure, you allow "Apps to access your mic" and "allow desktop apps to access your mic"
- Make sure, Insurgency Sandstorm is allowed to use your mic

Check your mixer and your sound-device settings, too.

2. Steam settings
- Navigate to --> Steam Friendlist > Settings > Voice
- Try the test first --> "Start Mic Test"

These are my Steam voice settings, maybe try with these first:
- "Voice input device" and "voice output device" --> "Default"
- Volume "input volume/gain" and "Output volume/gain" is set to full (blue bar fully visible)
- Voice transmission type --> "Open Microphone"
- Mute toggle hotkey assigned as --> "None"

Then there were some problems with some blutooth headsets, if you have different hardware (old phone headset maybe), try if it's a hardware problem.