The fact that the same code works on macOS 12 and 11 make me think this is macOS bug. We have faced the issue with our WebRTC based app, but as you can see with the example below it does not involve any peers or network connection, it is some sort of webkit audio streaming issue. On JavaScript side everything is fine, stream is connected, active and not muted. Can anyone please confirm this page works in their WebView on their macOS 13? As soon as you give access to mic, you should hear yourself: https://webrtc.github.io/samples/src/content/getusermedia/audio/ It works in Safari and on macOS 11 and 12, but I hear no sound on macOS 13.1 I have isolated issue to a simple program. You can find steps to recreate below: Open Xcode and create new App with the following settings: MacOS, XIB, ObjectiveC. In the "App Sandbox Settings" of the new app select “Audio Input” and “Outgoing Connections (Client)” options. This will give app access to microfone and web. Add the following key to “Info.plist” file: “Privacy - Microphone Usage Description” and any text as its value. This is required to request microphone access. In the AppDelegate.m file edit applicationDidFinishLaunching function the following way: - (void)applicationDidFinishLaunching:(NSNotification *)aNotification {    [AVCaptureDevice requestAccessForMediaType:AVMediaTypeAudio completionHandler:^(BOOL granted) {         dispatch_async(dispatch_get_main_queue(), ^{         WKWebView *webkit = [WKWebView.alloc initWithFrame:self.window.contentView.frame configuration:WKWebViewConfiguration.alloc.init];         [self.window.contentView addSubview:webkit];         webkit.autoresizingMask = NSViewWidthSizable | NSViewHeightSizable;         [webkit loadRequest:[NSURLRequest requestWithURL: [NSURL URLWithString: @"https://webrtc.github.io/samples/src/content/getusermedia/audio/"]]];         });     }]; } DONE

The problem in short: Customer uses single paid subscription on more than 5 macs. We are developers of an app which is used mostly by small businesses and we sell it as a cheap yearly subscription. It is VERY common for our customers to use the same Apple ID for purchases for all their machines. Recently we faced a customer who uses the same subscription on 10 macs at the same time. I don’t believe they are abusing the system; they just find it easier to manage orders via a single account. At least customer said they won’t mind purchasing more subscriptions but do not know how. And I do not know how to sell. How to sell more subscriptions to users who use our app on several computers but via the same Apple ID? Side notes: I know this is bad practice to use the same Apple ID on many machines, but it is not me it is our customers who do this! And a lot of them. I know Apple says “you can have ten devices (no more than five computers) associated with your Apple ID for purchases at one time”. Whatever this means it does not work in our case as customers can use the same Apple ID to use the same subscription on more than 5 devices.