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PASSEDvendor / ubiquiti_ap_isolation
UniFi AP Mass Isolation After Controller Update
A UniFi controller update introduces a bug that causes all APs to lose their management connection. APs continue serving clients with last-known config, but cannot be managed, updated, or monitored.
Pattern
UBIQUITI_EVENT
Severity
CRITICAL
Confidence
85%
Remediation
Remote Hands
Test Results
| Metric | Expected | Actual | Result |
|---|---|---|---|
| Pattern Recognition | UBIQUITI_EVENT | UBIQUITI_EVENT | |
| Severity Assessment | CRITICAL | CRITICAL | |
| Incident Correlation | Yes | 22 linked | |
| Cascade Escalation | Yes | Yes | |
| Remediation | — | Remote Hands — Corax contacts on-site support via call, email, or API |
Scenario Conditions
UniFi Network Controller 8.x updated overnight. 45 UniFi 6 Pro APs across 3 buildings. All APs show 'Disconnected' in controller. Clients still connected but no management visibility.
Injected Error Messages (3)
UniFi controller reporting 45 APs in disconnected state after firmware update — AP isolation detected, adoption failed for all devices, unifi controller version mismatch with AP firmware
UniFi AP isolated from controller — Building-A UAP-01 firmware mismatch after controller update, AP running with cached config, management channel lost
Ubiquiti AP isolation — Building-B UAP-20 cannot reach UniFi controller, firmware mismatch detected, wireless clients connected but unmanaged
Neural Engine Root Cause Analysis
The UniFi controller is experiencing a firmware version mismatch between the controller and 45 access points following a firmware update. This mismatch is preventing AP adoption and causing mass disconnection, effectively isolating all wireless network infrastructure. The controller service may also be unresponsive (Status Code: N/A), compounding the adoption failures and creating a complete wireless network outage.
Remediation Plan
1. Verify UniFi controller service status and restart if unresponsive 2. Access controller web interface at http://10.0.0.50:8443 to confirm accessibility 3. Check controller firmware version and AP firmware versions for compatibility 4. If controller was updated but APs weren't, initiate batch AP firmware upgrade through controller 5. If APs were updated but controller wasn't, upgrade controller firmware to compatible version 6. Force re-adoption of all 45 APs through controller interface 7. Monitor adoption status and verify all APs reconnect successfully 8. Validate wireless network functionality across all coverage areas
Tested: 2026-03-30Monitors: 3 | Incidents: 3Test ID: cmncje5ef00n4obqej7jobw7e