Microphone Permissions in Windows 10
To allow the microphone usage in Windows 10 you'd need to go to Start->Settings->Privacy and select Microphone from the left side menu.
1. Click Start button and the Settings icon:
2. Click on Privacy:
3. Click on Microphone:
4. Make sure that it says "Microphone access for this device is on" and that the "Allow apps to access your microphone" is switched to On as well:
No specific app needs to be selected, so you can disable those to which you don't want to allow access.