Digging deeper, I also see the messages in the system-log like NickiOtte regarding failing loading a kext by rpmuxd. Trying to load it manually gives this: /L/A/u/bin $ sudo kextload /Library/Apple/System/Library/Extensions/RemoteVirtualInterface.kext Password: Executing: /usr/bin/kmutil load -p /Library/Apple/System/Library/Extensions/RemoteVirtualInterface.kext Error Domain=KMErrorDomain Code=29 "Authenticating extension failed: Kext com.apple.nke.rvi v2.1.0 in executable kext bundle com.apple.nke.rvi at /Library/Apple/System/Library/Extensions/RemoteVirtualInterface.kext: Authenticating extension failed: Bad code signature" UserInfo={NSLocalizedDescription=Authenticating extension failed: Kext com.apple.nke.rvi v2.1.0 in executable kext bundle com.apple.nke.rvi at /Library/Apple/System/Library/Extensions/RemoteVirtualInterface.kext: Authenticating extension failed: Bad code signature} So, the kernel-extension needs an update or anything like this? @eskimo Or may have this been caused by an faulty upgrade, and there is an updated version of the kernel extension that is only installed on a clean install? (No clean install on this system since I started using it, always upgrading)

Doesn't work for me either. Always receiving Starting device 00008030-<redacted> [FAILED] macOS 11.4 Xcode 12.5, also tried with the rvictl bundled in Xcode 13 beta 2 MacBook Pro 15-inch 2018 Restarting the MacBook / iPhone didn't help. Would be great if rvictl could give a hint why it is failing. Wasted hours on this topic.