All of the audio settings are turned up full on the skype settings and the strange things is that in the system preferences I can see that the mic … Uncheck the box next to Skype for Business… I've got a user who is trying to make calls using skype for business on a MacBook but when they do, the mic doesn't seem to be working. I’ve re-installed the Skype for Business… Hi, I need urgent support in relation to the following problem: Mac Book Pro macOS Catalina 10.15.4 does not detect microphone for calls with Skype for business. But the app appears under camera and screen recording privacy settings. If Skype for Business is not listed under "Microphone", go to "Camera" and find Skype for Business on the list. Skype for Business app is not appeared in the microphone privicy settings so I can’t give permission for this. Check your Audio Device Settings. If Skype for Business is not on the list, go to Fix #3. Fix #2. In the system preferences, the checkbox for Skype for business does not appear under the microphone … On the lower-left side of the Skype for Business main window and choose a device from Select Primary Device. On the lower-left side of the Skype for Business main … I’ve tried to use an external microphone and it has not helped.