While attempting to load a Network extension with OSSystemExtensionRequest I keep getting a "didFailWithError error 1". SIP is disabled. Does anyone know what code 1 is and how to fix it?
OSSystemExtensionRequest didFailWithError error 1
OK. I found it. The error in question is OSSystemExtensionErrorUnknown. Not very helpful.
Errors like this are usually accompanied by a system log entry that providers more details. For my advice on working with the system log, see Your Friend the System Log.
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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"
My Friend the System Log was not at all useful:
2025-06-18 12:43:44.553820+0000 0x6de3 Default 0x0 5681 0 dsa: System extension request com.kithrup.dsa.Extension (0x60000176c8a0) failed with error The operation couldn't be completed. (OSSystemExtensionErrorDomain error 1.) 2025-06-18 12:43:44.554109+0000 0x6de3 Error 0x0 5681 0 dsa: [com.kithrup:ExtensionLoader] Request to load extension com.kithrup.dsa.Extension failed with unknown error, trying again 2025-06-18 12:43:44.554480+0000 0x6de3 Default 0x0 5681 0 dsa: System extension request com.kithrup.dsa.Extension (0x60000176bcf0) failed with error The operation couldn't be completed. (OSSystemExtensionErrorDomain error 1.) 2025-06-18 12:43:44.554635+0000 0x6de3 Error 0x0 5681 0 dsa: [com.kithrup:ExtensionLoader] Request to load/unload extension com.kithrup.dsa.Extension failed with error The operation couldn't be completed. (OSSystemExtensionErrorDomain error 1.)
<pause> hm, a bit before that, it looks like sysextd crashed, I presume while trying to load it. It, too, is lacking in any useful information. The sysdiagnose has a crash log for sysexted, which is equally helpful:
Thread 2 Crashed:: Dispatch queue: sysextd.extension_manager 0 sysextd 0x1013c3a1e 0x101369000 + 371230 1 sysextd 0x1013abc0b 0x101369000 + 273419 2 sysextd 0x1013ab8c6 0x101369000 + 272582 3 sysextd 0x1013af069 0x101369000 + 286825 4 sysextd 0x1013ab680 0x101369000 + 272000 5 sysextd 0x1013ab48c 0x101369000 + 271500 6 sysextd 0x1013ab703 0x101369000 + 272131 7 Foundation 0x7ff8057d7525 __NSXPCCONNECTION_IS_CALLING_OUT_TO_EXPORTED_OBJECT_S1__ + 10 8 Foundation 0x7ff805dad25f -[NSXPCConnection _decodeAndInvokeMessageWithEvent:reply:flags:] + 2318 9 Foundation 0x7ff805dae9d8 message_handler_message + 79 10 Foundation 0x7ff805dae4f5 message_handler + 140 11 libxpc.dylib 0x7ff80455f998 _xpc_connection_call_event_handler + 56 12 libxpc.dylib 0x7ff80455e74c _xpc_connection_mach_event + 1399 13 libdispatch.dylib 0x7ff8046760cd _dispatch_client_callout4 + 9 14 libdispatch.dylib 0x7ff8046901a7 _dispatch_mach_msg_invoke + 455 15 libdispatch.dylib 0x7ff80467c088 _dispatch_lane_serial_drain + 393 16 libdispatch.dylib 0x7ff804690cd4 _dispatch_mach_invoke + 484 17 libdispatch.dylib 0x7ff80467c088 _dispatch_lane_serial_drain + 393 18 libdispatch.dylib 0x7ff80467cd39 _dispatch_lane_invoke + 366 19 libdispatch.dylib 0x7ff8046873fc _dispatch_workloop_worker_thread + 765 20 libsystem_pthread.dylib 0x7ff804813c55 _pthread_wqthread + 327 21 libsystem_pthread.dylib 0x7ff804812bbf start_wqthread + 15
(SIGILL aka ****** 4, which I vaguely recall is signing related in xnu?)
SIGILL usually means you’re on Intel and hit a trap. See EXC_BREAKPOINT (SIGTRAP) and EXC_BAD_INSTRUCTION (SIGILL) for more on that.
I’ve seen this sort of thing before. If you post an Apple crash report for the problem, I might be able to learn more from that. See Posting a Crash Report for advice on how to do that.
Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"