{ "schema": "incident-state/v1", "incident": "Intel Connectivity Performance Suite zeroes IPv6 Flow Label mid-connection", "updated": "2026-10-08", "status": "root_cause_confirmed_reproduced_fixed_in_intel_generic_build_broken_oem_builds_still_on_windows_update", "component": { "product": "Intel Connectivity Performance Suite", "version": "40.25.926.0", "driver": "IntcCo11X64.sys", "driver_version": "11.5.11.19", "driver_service": "INTCCoSvc", "wfp_provider": "Rivet Networks, LLC - RFE version 6.1.0.1", "callouts": [ { "name": "IpV6 Egress Transport Callout", "layer": "FWPM_LAYER_OUTBOUND_TRANSPORT_V6", "flags": [ "FWP_CALLOUT_FLAG_CONDITIONAL_ON_FLOW" ] }, { "name": "IpV6 Ingress Network Outbound Callout", "layer": "FWPM_LAYER_OUTBOUND_IPPACKET_V6" } ], "related_services": [ "IDBWM", "Intel Connectivity Network Service", "IntelConnectService" ] }, "environment": { "device": "Samsung Galaxy Book 960QHA", "cpu": "Intel Core Ultra 7 256V", "wifi": "Intel Wi-Fi 7 BE201 (driver 23.160.0.4)", "os": "Windows 11 Pro 26H2 build 26300.9457", "onenote": "16.0.20430.20092", "network": "native IPv6, Japan (NTT FLET\u0027S IPoE)", "affected_endpoint": "Azure Front Door anycast 2620:1ec:50::11 (ln-0001.ln-msedge.net)" }, "evidence": { "wire_flow_label_kept": { "SYN": "24/24", "FIN": "11/11", "ACK_data": "0/42" }, "rst_hop_limit": 49, "synack_hop_limit": 47, "ab_test": [ { "condition": "baseline", "ipv6_connections_ok": "4/10", "ack_data_label_kept": "0/42" }, { "condition": "IDBWM stopped", "ipv6_connections_ok": "1/10", "ack_data_label_kept": "0/18" }, { "condition": "INTCCoSvc and ICPS services stopped", "ipv6_connections_ok": "10/10", "ack_data_label_kept": "65/65" }, { "condition": "final, ICPS disabled", "ipv6_connections_ok": "10/10", "ack_data_label_kept": "73/73" } ], "ruled_out": [ "AdGuard WFP driver", "AdGuard VPN WFP driver", "NetLimiter 5 driver" ], "ipv4_affected": false, "retest_2026_10_07": { "method": "34 sites x 5 IPv6 connections, header-only pktmon at the Wi-Fi miniport, IPv4 control", "steps": [ { "step": "A", "icps": "OEM 40.25.926.0 disabled", "ipv6_ok": "168/170", "ack_data_label_kept": "3779/3779" }, { "step": "B", "icps": "OEM 40.25.926.0 running, driver 11.5.11.19", "ipv6_ok": "138/170", "ack_data_label_kept": "8457/9842", "onedrive_edge_label_kept": "0/60" }, { "step": "C", "icps": "OEM disabled again", "ipv6_ok": "169/170", "ack_data_label_kept": "4240/4240" }, { "step": "N", "icps": "none (removed, rebooted)", "ipv6_ok": "168/170", "ack_data_label_kept": "4230/4230" }, { "step": "G", "icps": "Intel generic 50.26.623.243 running, driver 12.10.14.33", "ipv6_ok": "169/170", "ack_data_label_kept": "11711/11711", "onedrive_edge_label_kept": "201/201" } ], "failing_in_B": [ "d.docs.live.net 1/5", "api.onedrive.com 1/5", "www.office.com 3/5", "teams.microsoft.com 4/5", "www.skype.com 2/5", "portal.azure.com 0/5", "dev.azure.com 2/5", "marketplace.visualstudio.com 0/5" ] } }, "impact": { "onenote_sync_broken_since": "2026-09-13T05:59:00+09:00", "onenote_restored": "2026-10-03", "symptoms": [ "OneNote: We can\u0027t get to your notebooks right now", "OneNote: empty notebooks shown as Up to date", "ERR_CONNECTION_RESET on Microsoft 365 sign-in and other sites" ] }, "reports": { "intel": [ { "channel": "Intel Community", "url": "https://community.intel.com/t5/Wireless/Intel-ICPS-driver-zeroes-IPv6-Flow-Label-mid-connection-breaking/m-p/1760647", "public": true, "date": "2026-10-03" }, { "channel": "Intel Customer Support case", "public": false, "date": "2026-10-03", "state": "generic_build_test_results_sent_2026-10-07" } ], "microsoft": [ { "channel": "Feedback Hub (OneNote)", "url": "https://aka.ms/AA13q37q", "public": true, "date": "2026-10-03" }, { "channel": "Feedback Hub (Windows networking)", "url": "https://aka.ms/AA13q37r", "public": true, "date": "2026-10-03" }, { "channel": "Feedback Portal idea", "url": "https://feedbackportal.microsoft.com/feedback/idea/dd326ebc-9da1-f111-85ce-7c1e529382f4", "public": true, "date": "2026-08-27", "root_cause_added": "2026-10-03" }, { "channel": "Microsoft Q\u0026A", "url": "https://learn.microsoft.com/en-us/answers/questions/5682454/onenote-sync-says-up-to-date-on-old-pc-but-noteboo", "public": true, "date": "2026-10-03" }, { "channel": "Microsoft Support case", "public": false, "opened": "2026-08-27", "root_cause_sent": "2026-10-03", "escalation_requested": "2026-10-07" } ], "samsung": [ { "channel": "Samsung Community US", "public": true, "state": "posted_hidden_as_spam_then_restored_by_moderator", "url": "https://us.community.samsung.com/t5/Computers/Galaxy-Book-ships-Intel-software-that-breaks-IPv6-networking-and/m-p/3679834", "update_posted": "2026-10-08", "update_url": "https://us.community.samsung.com/t5/Computers/Galaxy-Book-ships-Intel-software-that-breaks-IPv6-networking-and/m-p/3683502/highlight/true#M14838" }, { "channel": "Samsung Care support case (live chat)", "public": false, "date": "2026-10-03", "state": "opened_escalation_requested" }, { "channel": "Samsung US live chat (second contact, supervisor)", "public": false, "date": "2026-10-08", "state": "no_escalation_path_referred_to_office_of_the_president" }, { "channel": "Samsung Electronics America, Office of the President", "public": false, "date": "2026-10-08", "state": "formal_complaint_and_compensation_claim_sent_awaiting_reply" } ], "other": [ ] }, "vendor_fix": { "intel_generic_build_without_bug": "ICPS 50.26.623.243", "driver": "IntcCo11X64.sys 12.10.14.33", "tested": "2026-10-07", "release_notes_mention_fix": false, "advisory": null, "catalog_entries_of_fixed_build": 1, "catalog_submitter": "Samsung (Windows 11 25H2, SID_1001/1002 only; affected laptop is SID_0001)" }, "workaround": "Disable INTCCoSvc, IDBWM, Intel Connectivity Network Service and IntelConnectService, or replace the OEM build with Intel generic ICPS 50.26.623.243", "diagnosed_by": "Anthropic Claude (agent on the affected machine), after OpenAI Codex abandoned the investigation", "distribution": { "windows_update_installs_on_affected_laptop": [ "2025-05-07 ICPSExtension+ICPSComponent 4.1025.304.2", "2026-05-10 ICPSExtension 40.25.926.173", "2026-05-14 ICPSComponent 40.25.926.173", "2026-06-13 ICPSExtension 40.25.926.173" ], "source": "setupapi.dev.log, Install Windows Update driver sections, wuaucltcore.exe", "catalog_icps_entries": 1086, "catalog_versions": 47, "catalog_companies": 19, "reported_broken_builds": { "4.1025.207.1": "HP 6, Dynabook 2", "40.25.725.165": "ASUS 30, HP 3, Lenovo 3, VAIO 3", "40.25.926.173": "Lenovo 12, VAIO 4, Huaqin 4, Samsung 3" }, "details": "affected-oems.md" } }