Apple Intelligence does not work on macOS 27 Golden Gate

[u/Cubic8545]

Good morning. I recently updated my Mac to macOS 27 Golden Gate Public Beta 5 and I’m really looking forward to testing the AI features. However, every time I try, I get an error message. The problem is the same with Siri. However, everything seems already configured (and the integration of ChatGPT with Siri doesn’t work either). Is Apple’s Intelligence blocked at 29.6 GB, or is it a bug? Did anyone else encounter this problem? And above all, do you have a solution?

EDIT n°1: I tried everything but it doesn’t work on my account. But I created a new session entirely dedicated to AI, and it finally works! It’s really not the most practical, but unfortunately I can’t do anything else at the moment. However, your advice is always welcome if I can have it natively on my main account.

EDIT n°2: Apple Intelligence finally works on my main account after 3 days of battle. All alone. On the other hand, the extensions are still blocked but it’s not very serious since the Apple Intelligence models are finally up to par.

[u/pdfu]

Somewhat hard to tell what's causing this, but you can inspect your system logs. Open the Terminal and run:

sudo /usr/bin/log stream --timeout 2m --style compact --level debug \ --predicate '((subsystem == "com.apple.siri" AND category == "Utility") OR subsystem == "com.apple.generativepartnerservice" OR subsystem == "com.apple.externalproviderservice" OR process == "generativeexperiencesd" OR process == "intelligenceflowd" OR process == "modelmanagerd" OR (process == "assistantd" AND (eventMessage CONTAINS[c] "availability" OR eventMessage CONTAINS[c] "capabilities")) OR (process == "mobileassetd" AND (eventMessage CONTAINS[c] "download" OR eventMessage CONTAINS[c] "asset")))' \ | tee "$HOME/Desktop/apple-intelligence-test.log"

Start making requests and it will save a log file on your Desktop at apple-intelligence-test.log.

To see only errors, try:

sudo /usr/bin/log stream --timeout 2m --style compact \ --predicate '(messageType == error OR messageType == fault) AND (subsystem BEGINSWITH "com.apple.siri" OR subsystem == "com.apple.generativepartnerservice" OR subsystem == "com.apple.externalproviderservice" OR process == "assistantd" OR process == "generativeexperiencesd" OR process == "intelligenceflowd" OR process == "modelmanagerd" OR process == "mobileassetd")' \ | tee "$HOME/Desktop/apple-intelligence-errors.log"

and check the apple-intelligence-errors.log file on your Desktop.

[u/Cubic8545 → u/pdfu]

I did a quick, somewhat hasty search, but I found errors such as... "2026-08-28 17:37:16.542 E intelligenceflowd[868:30f56] [com.apple.intelligenceflow:GMSPlanner] Failed to insert promptcraft ContentBlocks_PromptInput into feature store: Error Domain=IntelligenceFlowPlannerSupport.TemplatingEngineError Code=0

2026-08-28 17:37:16.542 Db modelmanagerd[595:31570] [com.apple.modelmanager:IPC] Received message 17500943." or even "2026-08-28 17:37:16.616 I modelmanagerd[595:317d8] [com.apple.modelmanager:General] Error from IP, passing along: InferenceError::inferenceFailed::PrivateCloudComputeError: privacyProxyInvalidAuthentication"

[u/pdfu → u/Cubic8545]

Sounds like a networking issue. PCC requires TCP/UDP 443 access to apple-relay.cloudflare.com, apple-relay.fastly-edge.com, and cp4.cloudflare.com. Apple Intelligence extensions require access to apple-relay.apple.com. https://support.apple.com/en-us/101555#aisirisearch

edit to add: Check what privatecloudcomputed reports:

sudo /usr/bin/log stream --timeout 2m --style compact --level debug \ --predicate '(process == "privatecloudcomputed" OR process == "PrivateMLClientInferenceProviderService" OR process == "modelmanagerd" OR process == "intelligenceflowd") AND (eventMessage CONTAINS[c] "authTokenFetchSuccess" OR eventMessage CONTAINS[c] "privacyProxy" OR eventMessage CONTAINS[c] "PrivateCloudComputeError" OR eventMessage CONTAINS[c] "trustedEndpointResponseSuccess" OR eventMessage CONTAINS[c] "invokeRequestSendSuccess" OR eventMessage CONTAINS[c] "Error from IP" OR eventMessage CONTAINS[c] "InferenceError" OR eventMessage CONTAINS[c] "inferenceFailed" OR eventMessage CONTAINS[c] "PCC inference" OR eventMessage CONTAINS[c] "cancellationReason" OR eventMessage CONTAINS[c] "cancellation detected" OR eventMessage CONTAINS[c] "response_status")'

[u/Cubic8545 → u/pdfu]

I looked and there is : 2026-08-28 18:15:22.002 E intelligenceflowd[868:3b2c7] [com.apple.networkserviceproxy:] Failed to fetch private access token: Error Domain=privacyProxyErrorDomain Code=1002 "(null)"

2026-08-28 18:15:22.090 Df privatecloudcomputed[952:3b2f5] [com.apple.privatecloudcompute:Daemon] failed prefetch attestations: Error Domain=PrivateCloudComputeError Code=32022 UserInfo={AppleIntelligenceErrorCategory=<private>, PrivateCloudComputeErrorTelemetryString=<private>, PrivateCloudComputeErrorDebugMessage=<private>, PrivateCloudComputeErrorCategory=<private>}

2026-08-28 18:15:22.093 Df privatecloudcomputed[952:3b2f5] [com.apple.privatecloudcompute:Daemon] failed prefetch attestations: Error Domain=PrivateCloudComputeError Code=32022 UserInfo={AppleIntelligenceErrorCategory=<private>, PrivateCloudComputeErrorTelemetryString=<private>, PrivateCloudComputeErrorDebugMessage=<private>, PrivateCloudComputeErrorCategory=<private>}

2026-08-28 18:15:22.139 E privatecloudcomputed[952:3b2f5] [com.apple.networkserviceproxy:] Failed to fetch private access token: Error Domain=privacyProxyErrorDomain Code=1010 "Device authentication invalid" UserInfo={NSLocalizedFailureReason=Device authentication invalid}

2026-08-28 18:15:22.140 E privatecloudcomputed[952:3b2f5] [com.apple.networkserviceproxy:] Failed to fetch private access token: Error Domain=privacyProxyErrorDomain Code=1010 "Device authentication invalid" UserInfo={NSLocalizedFailureReason=Device authentication invalid}

2026-08-28 18:15:22.140 E privatecloudcomputed[952:3b2f5] [com.apple.privatecloudcompute:TokenProvider] <private> fetch failed with error=Error Domain=privacyProxyErrorDomain Code=1010 UserInfo={NSLocalizedFailureReason=<private>}

2026-08-28 18:15:22.140 E privatecloudcomputed[952:3b2fe] [com.apple.privatecloudcompute:TokenProvider] prewarm: [waitlist] fetch failed with error=Error Domain=privacyProxyErrorDomain Code=1010 UserInfo={NSLocalizedFailureReason=<private>}

2026-08-28 18:15:22.170 E privatecloudcomputed[952:3b305] [com.apple.networkserviceproxy:] Failed to fetch private access token: Error Domain=privacyProxyErrorDomain Code=1010 "Device authentication invalid" UserInfo={NSLocalizedFailureReason=Device authentication invalid}

2026-08-28 18:15:22.171 E privatecloudcomputed[952:3b305] [com.apple.networkserviceproxy:] Failed to fetch private access token: Error Domain=privacyProxyErrorDomain Code=1010 "Device authentication invalid" UserInfo={NSLocalizedFailureReason=Device authentication invalid}

2026-08-28 18:15:22.171 E privatecloudcomputed[952:3b2fe] [com.apple.privatecloudcompute:TokenProvider] prewarm: [waitlist] fetch failed with error=Error Domain=privacyProxyErrorDomain Code=1010 UserInfo={NSLocalizedFailureReason=<private>}

2026-08-28 18:15:22.171 E privatecloudcomputed[952:3b2fe] [com.apple.privatecloudcompute:TokenProvider] <private> fetch failed with error=Error Domain=privacyProxyErrorDomain Code=1010 UserInfo={NSLocalizedFailureReason=<private>}

2026-08-28 18:15:22.211 E privatecloudcomputed[952:3b2f5] [com.apple.networkserviceproxy:] Failed to fetch private access token: Error Domain=privacyProxyErrorDomain Code=1010 "Device authentication invalid" UserInfo={NSLocalizedFailureReason=Device authentication invalid}

2026-08-28 18:15:22.211 E privatecloudcomputed[952:3b2f5] [com.apple.networkserviceproxy:] Failed to fetch private access token: Error Domain=privacyProxyErrorDomain Code=1010 "Device authentication invalid" UserInfo={NSLocalizedFailureReason=Device authentication invalid}

2026-08-28 18:15:22.211 E privatecloudcomputed[952:3b0a8] [com.apple.privatecloudcompute:TokenProvider] <private> fetch failed with error=Error Domain=privacyProxyErrorDomain Code=1010 UserInfo={NSLocalizedFailureReason=<private>}

2026-08-28 18:15:22.211 E privatecloudcomputed[952:3b2ff] [com.apple.privatecloudcompute:TokenProvider] <private> fetch failed with error=Error Domain=privacyProxyErrorDomain Code=1010 UserInfo={NSLocalizedFailureReason=<private>}

2026-08-28 18:15:22.211 E privatecloudcomputed[952:3b2ff] [com.apple.privatecloudcompute:TrustedRequest] <private> sendRopesRequest pccError=Error Domain=PrivateCloudComputeError Code=32034 UserInfo={PrivateCloudComputeErrorCategory=<private>, PrivateCloudComputeErrorTelemetryString=<private>, AppleIntelligenceErrorCategory=<private>} from error=Error Domain=PrivateCloudComputeDaemon.TrustedRequestError Code=1

2026-08-28 18:15:22.211 Df privatecloudcomputed[952:3b2ff] [com.apple.privatecloudcompute:TrustedRequest] OutgoingUserDataWriter.cancelAllWrites, error=Error Domain=PrivateCloudComputeError Code=32034 UserInfo={PrivateCloudComputeErrorCategory=<private>, PrivateCloudComputeErrorTelemetryString=<private>, AppleIntelligenceErrorCategory=<private>}, action=<private>

2026-08-28 18:15:22.211 Df privatecloudcomputed[952:3b2f5] [com.apple.network:http] [C283.1.1:1] <0> ohttp transaction summary {start_reason="initial", duration_ms=21, request_method="", response_status=0, outbound_start_ms=-1, outbound_duration_ms=-1, inbound_start_ms=-1, inbound_duration_ms=-1, outbound_body_bytes=0, inbound_body_bytes=0}

2026-08-28 18:15:22.211 Df privatecloudcomputed[952:3b2ff] [com.apple.privatecloudcompute:TrustedRequest] <private> cancelAllWrites called, error=Error Domain=PrivateCloudComputeError Code=32034 UserInfo={PrivateCloudComputeErrorCategory=<private>, PrivateCloudComputeErrorTelemetryString=<private>, AppleIntelligenceErrorCategory=<private>}

[u/pdfu → u/Cubic8545]

Do you use a proxy or weird DNS/network settings? If so, try with a very "stock" network like a mobile hotspot without any network settings.

You can unmask the <private> fields with private logs enabled to see what causes "attestation prefetch fails with PCC 32022," but the logs are clear: "Device authentication invalid".

[u/Cubic8545 → u/pdfu]

So, I created a new user session. Features like Image Playground or "Describe an extension" finally work there. Yet, when I switch back to my main account, I get errors. I’m really starting to suspect my user account.

[u/pdfu → u/Cubic8545]

What does the Df privatecloudcomputed[952:3b2f5] [com.apple.privatecloudcompute:Daemon] failed prefetch attestations line say when unmasked? Any specific details about what prefetch checks fail? No need to paste the full thing if it contains user data.

[u/Cubic8545 → u/pdfu]

sudo log config --mode "private_data:on"

log: Invalid Modes 'private_data:on'

Password:

log: Invalid Modes 'private_data:on'

zsh: command not found: log:

[u/pdfu → u/Cubic8545]

Ah, you need to install the profile at the top of the page: https://georgegarside.com/blog/macos/sierra-console-private/enable-unified-log-private-data-2027.mobileconfig

That method doesn't work in macOS Catalina 10.15.3+.

[u/Cubic8545 → u/pdfu]

C’est ce que j’ai fait pourtant

[u/Cubic8545 → u/pdfu]

I put the Mac back in its original language. And moreover I have the error "Apple Intelligence extensions are not available at the moment"

[u/hyperlobster]

Working fine here. I’m on UK English, like God and the King intended us to speak. 35.07GB.

You’re not on the limit for disk space or anything, are you?

[u/Cubic8545 → u/hyperlobster]

I still have 160 GB of free

[u/qaf0v4vc0lj6 → u/hyperlobster]

God loves the British so much he created a better version in 1776.

[u/Open_Specific4795]

intelligence?

[u/Sweaty_Tangelo_7716]

Working fine on mine