Hello HyNeko!
Battle.net and Overwatch utilize the same voice chat technology, so the uniformity of the issue makes sense. Let’s check a few other Windows settings related to the microphone.
Make sure Exclusive Mode is disabled:
- Right-click the speaker icon in the system tray and select Recording Devices.
- Select your device and click Properties.
- Select the Advanced Tab.
- Uncheck any boxes in the Exclusive Mode section.
Change how Windows behaves when it detects communications devices:
- Hit Windows key and type sound.
- Go to the Sound options.
- Click the Communications tab.
- For the setting “When Windows detects communications activity”, set it to “Do nothing”.
In conjunction with the above step, in-game you can go to Audio settings and try toggling your voice chat device between Default Devices or Comms Devices.