FYI...
Your test call on Skype says it's working yeah? You can hear yourself but your caller thinks you are on mute?
CHECK / FIX:
Windows10(not Skype) > Settings > Devices > Sound settings (hotlink top right) > Microphone privacy settings > Allow apps to access your microphone (turn on) > Choose which Microsoft Store apps can access your microphone > Skype (turn on).
Hard to believe this annoying depth of settings I know, especially when Microsoft bought and own Skype.
Oh and your new Skype login might conflict with your old Microsoft Account. Obviously they didn't think of this.
Your test call on Skype says it's working yeah? You can hear yourself but your caller thinks you are on mute?
CHECK / FIX:
Windows10(not Skype) > Settings > Devices > Sound settings (hotlink top right) > Microphone privacy settings > Allow apps to access your microphone (turn on) > Choose which Microsoft Store apps can access your microphone > Skype (turn on).
Hard to believe this annoying depth of settings I know, especially when Microsoft bought and own Skype.
Oh and your new Skype login might conflict with your old Microsoft Account. Obviously they didn't think of this.