headset microphone doesn't work

what model is the headset ?

Hey! Whenever I select the external microphone, it doesn't do anything and stays with the headset microphone.

Is the microphone for this headset in-line (on the actual headset cable)? I know for other headsets this means the microphone won't work for the Xbox One.

Xbox gamepads do not have a microphone in it.

Yes I know the controller doesn't have a microphone it's when the microphone headset is connected to the controller.

Is it possible you accidentally pressed X while on a Party management screen?

That will mute you in this party.

Also try the following, to check if it's an issue with the microphone:

Create a new message to a friend (or any Gamertag, it doesn't matter as you don't really send a message).

Press the microphone icon to record a voice message.

Talk into your microphone, and when you have finished recording your message, listen to the message.

If that doesn't work, it's an issue with your microphone.

Has the microphone worked before? Or did you change headsets and microphones recently?