[quote='863563022, DTS Engineer, /thread/800777?answerId=863563022#863563022'] deprecated in favour of NSWorkspace.setDefaultApplication(at:toOpenURLsWithScheme:completion:), so if anyone decides to go down this path, they should start start there. [/quote] Can a sandboxed app use this NSWorkspace API to set itself as a default handler?

Understood and thank you, Quinn!

macOS 26.1 Beta (25B5072a) is still lacking this possibility. It's neither in the Phone app nor in the FaceTime settings. I did file the bug on September 21, 2025. The number is FB20321931

No, the setting is not in the Phone app settings on macOS 26. Although it is on iOS 26.

I'm also experiencing URLSessionDataTask timeouts when using QUIC. In my case, they start happening at around 85 parallel calls. I'm not using Cloudflare but tested it with two different operating systems on the server side (latest Debian and FreeBSD) and two different server softwares (latest Nginx and HAProxy). The iOS version is currently 16.6, and it was also happening on the previous iOS 16.x releases. When switching to HTTP/2 while keeping all other parts the same - it works rock solid.