Thank you for your feedback
Sorry, due to my personal situation, I didn't reply to you in time
As you described, your device always works fine when the microphone is plugged in properly
There is no setting to block audio input in win10
You can right-click on the volume button in the lower right corner and open sound settings
You can check if the input setting is for the microphone
You can also click the windows key > settings > troubleshooting > other troubleshooting > sound settings > run troubleshooting
Check if there is a problem detected in the audio
Hope the above information is helpful to you
Kirito | Microsoft Community Support Commissioner