Headset is muting all player,how do I fix this?

Hello there!

According to the explanation you have provided, please make sure to follow the following steps in order to fix your issue.

Please follow the the instructions on both links first:

Update your Xbox Wireless Controller | Xbox Support

Xbox Support

In case the issue still persists, the next step would be to perform a reset on the console. To do so you will need to follow the steps below to perform a reset on the Xbox :

Settings > System > Console Info > Reset This Xbox > Reset and Keep my Games and Apps.

Note =>The "Reset and Keep my Games and Apps" option will not cause losing your games, but please be aware that you need to be completely aware of the email address as well as the password of your account before going for it because it will require you to sign in to the account.

Sooo truue! I now have to completely turn off my headset and mute all players whenever I join a match! So frustrating...

would this still be the correct fix even if the muted microphone icon is showing no matter if there is a headset plugged into the controller or not? This icon stays on the screen when I plug any headset into the controller and when no headset at all is plugged
in. Thanks

Yes, the Kinect is not the issue. Even with the Kinect unplugged the mics are still muted for everyone.

On my old Elite Xbox 360 I could hear everyone through my tv fine. I had no headset though but it was ok because I could still hear people. Now on this new Kinect slim 360 the game won't let me hear anyone through my headset or mic. I They're muted because
their names have the muted icon beside them, which is the symbol of a speaker with a red x on it.

This can be done manually, I would mute loud or annoying players myself. But now with this Kinect 360 it seems like they're ALL muted (maunally) although I have not set them to be muted. Nothing comes out of my tv or headset. When I first played I could
hear them and myself but that was when I realized it was using the Kinect's mic. I didn't like that so I disabled the Kinect mic in the 360 settings. That was all I did.

Now the game does not recognize my headset either nor will it let me hear them. It's something with this Kinect. I've tried plugging it back in, unplugging it, plugging my headset in with kinect unplugged, plugging my headset in with Kinect plugged, it
just doesn't work anymore and I've gone through all the game menus and settings, there isn't a real section for "mic settings" ..you can't really do anything in CoD settings besides muting single players and like I said they're already muted. I've tried unmuting
them but there is no change and the X remains over their speaker beside their names.

My headset is permanently stuck on mute. No matter what I do it will not unmute. Ive powered off the controller, pulled the adapter in and out, restarted the system...nothing fixes it. This all happened after the latest system update.