Ok, I found this in dmesg/syslog: [46147.634755]: DriverKitSampleA[6170] triggered unnest of range 0x1fc000000->0x1fe000000 of DYLD shared region in VM map 0x853f7106fc70fc7d. While not abnormal for debuggers, this increases system memory footprint until the target exits. [46147.634762]: DriverKitSampleA[6170] triggered unnest of range 0x1fe000000->0x200000000 of DYLD shared region in VM map 0x853f7106fc70fc7d. While not abnormal for debuggers, this increases system memory footprint until the target exits. [46148.219526]: Sandbox: ContextStoreAgent(448) allow file-read-data /Users/daniel/Library/Developer/Xcode/DerivedData/DriverKitUserClientSample-haxyygamobxzqybcidlsjqhbccev/Build/Products/Debug/DriverKitSampleApp.appSandbox: ContextStoreAgent(448) allow file-read-data /Users/daniel/Library/Developer/Xcode/DerivedData/DriverKitUserClientSample-haxyygamobxzqybcidlsjqhbccev/Build/Products/Debug/DriverKitSampleApp.app/ContentsSandbox: ContextStoreAgent(448) allow file-read-data /Users/daniel/Library/Developer/Xcode/DerivedData/DriverKitUserClientSample-haxyygamobxzqybcidlsjqhbccev/Build/Products/Debug/DriverKitSampleApp.app/Contents/Info.plistSandbox: ContextStoreAgent(448) allow file-read-data /Users/daniel/Library/Developer/Xcode/DerivedData/DriverKitUserClientSample-haxyygamobxzqybcidlsjqhbccev/Build/Products/Debug/DriverKitSampleApp.appSandbox: ContextStoreAgent(448) allow file-read-data /Users/daniel/Library/Developer/Xcode/DerivedData/DriverKitUserClientSample-haxyygamobxzqybcidlsjqhbccev/Build/Products/Debug/DriverKitSampleApp.app/Contents/MacOS/DriverKitSampleApp1 duplicate report for Sandbox: ContextStoreAgent(448) allow file-read-data /Users/daniel/Library/Developer/Xcode/DerivedData/DriverKitUserClientSample-haxyygamobxzqybcidlsjqhbccev/Build/Products/Debug/DriverKitSampleApp.app/Contents/MacOS/DriverKitSampleAppSandbox: ContextStoreAgent(448) allow file-read-xattr /Users/daniel/Library/Developer/Xcode/DerivedData/DriverKitUserClientSample-haxyygamobxzqybcidlsjqhbccev/Build/Products/Debug/DriverKitSampleApp.app/Contents/MacOS/DriverKitSampleAppSandbox: ContextStoreAgent(448) allow file-read-data /Users/daniel/Library/Developer/Xcode/DerivedData/DriverKitUserClientSample-haxyygamobxzqybcidlsjqhbccev/Build/Products/Debug/DriverKitSampleApp.app/Contents/Info.plistSandbox: nsattributedstringagent(5875) deny(1) mach-lookup com.apple.CARenderServerSandbox: nsattributedstringagent(878) deny(1) mach-lookup com.apple.CARenderServerwlan0:com.apple.p2p: isInfraRealtimePacketThresholdAllowed allowed:1 option:32 threshold:50 noRegistrations:1 cachedPeerCount:0 fastDiscoveryInactive:1 fastDiscoveryOnSince:46148792 The app is automatically signed with a valid dev team and uses Managed provisioning.

Hi Kevin, Thanks for all the pointers. Trying to debug into the Dext example: DriverLoadingViewModel+macOS request yields error 9: "extension category returned error". Where do I find more information and how do I fix that? Thanks!

Hi Kevin, Deleting "com.apple.developer.driverkit.userclient-access" should clear this issue. Thank you, that helped indeed the compilation to succeed. The connection fails though: The log shows: sysex didFailWithError: extension category returned error I was wondering now, if I should try to fix the Driver Communication example or straight move on to adapt the SimpleAudioDriver example. Unfortunately I don't know where to start. I am a C++ developer by trade and the os specific toolchains are hard to grasp for me. Thank you for all the help so far! Daniel

Thank you for the information. The Communicating example says in the readme to disable SIP, so which one is right? Building the Communicating example yields the same error, saying "file a bug report" like in the screenshot above. And the provisioning profile is missing the "driverkit.allow-any-userclient-access" entitlement. How should I add that? I cannot see that in the checkboxes below the error. Thanks in advance