How to make the microphone work in skype windows 10?

Question

Skype

I am an experienced user, but I have not encountered this:
Recording from a headset works, but it works for example in Chrome, but does not work in Skype or PhonerLight.
Moreover, Skype and the phoner see this microphone, show it in the list, but the interlocutor cannot hear me.
Those. I can dictate the desired request in chrome, but when I call on Skype, the interlocutor does not hear me.
Drivers are up to date, software is up to date.
3 days ago the microphone worked everywhere. When the microphone went off, nothing was installed on the computer.
How to fix it and what is the problem?