it’s repeatable:
normal sound in any prg / app except Zwift
start Zwift → no sound and also no more in any other app
re-boot and start any prg / app → sound
and again
pls help - miss the birds and the chatter on the sidelines 
I’ve found that Zwift can “fight” some apps for sound. I’m not sure why but if I have any other app running (such as Spotify for music) then I get the “notification” sounds in Zwift (i.e. ride-ons etc) but not the “environmental” sounds (birds, traffic noise etc).
Is that the same as what you’re describing? Or do you not even get the environmental sounds either?
(I’m on ipad/iPadOS)
Ben,
Are you running in Windowed mode or full screen?
Secondly are you running multiple monitors?
Hi Stuart,
Zwift runs in full mode, no 2nd monitor connected.
Hi D.A.,
good observation but I have no other app running when I use Zwift.
There’s virtually no sound at all.
Did you click on the speaker icon in the task bar and change the sound device?
On that same icon (right click) did you look at the Volume mixer with and without Zwift.
Yes thank you, Gerrit, I did all that. Actually, when I sit on the bike and Zwift is running, nothing else is connected. Therefore, only the inbuild speaker (Realkek (R) Audio) is available. And as described earlier, without changing anything in the sound config after reboot, any other app / prg has sound which stops as soon as Zwift is running.
What do you mean by this Benjamin? You get some sound effects and not others (at full volume)? Or you get all sound effects but at a low/barely audible volume?
D.A., what I mean is no sound at all, independent from the volume.
I’ve been having the same issue since the last software update.
The annoying music is there till I log in and select a ride. As soon as I’m riding, all sound disappears
I am experiencing a sound problem, I’m running zwift off my IPhone that is up to date with all the new versions, I get sound on my tv with every ap but zwift, all I get is a clicking sound when I navigate through the prompts…any help would be greatly appreciated
Thank you so much for sharing the sound issue you’re facing. I completely understand how crucial sound is to fully enjoy your experience. This is Haziel from Zwift Support, and I wanted to share some steps that might help.
To start, I suggest trying to force-close Zwift and then reopening it. Sometimes, a simple restart of your iPhone, along with refreshing your TV connection (whether through AirPlay or HDMI), can help resolve minor glitches.
It might also be worth checking the settings within the game. You can customize the volume for the menu, notification, bike, and nature sounds, you hear in-game. You can find more information in this article: In-game settings for Cycling.
If the problem persists, uninstalling and then reinstalling the Zwift app could help resolve any underlying issues with the current installation.
Please don’t hesitate to reach out if you have any more questions or if there’s anything else we can do to assist you. We’re always here for you, and you can reach us at Support@zwift.com.