BF6 will not launch - Javelin Security Violation

Game: Battlefield 6 on Steam, appid 2807960, buildid 26003479

EA app 13.822.0.6335 - Anti-cheat 1.0.16371190

OS Windows 11 Insider Dev build 29704.1000 - CPU Ryzen 9 7945HX - GPU RTX 4060 Laptop, driver 32.0.16.2114

SYMPTOM

Pressing Play shows the Security Violation dialog (EA Javelin Anticheat service encountered an error), and the game never starts. Reproduced on every attempt since 2026-11-09 17:47, dozens of times, identical each time.

EVENT LOG

Application, EA Javelin Anticheat, Event 1000: ExitType 0x6334795AEAA98519

System, Service Control Manager, Event 7023: EAAntiCheatService terminated, 0xFFFF8519

System, Service Control Manager, Event 7023: EAAntiCheatService terminated, 0xFFFF0073

The service is reinstalled on each launch (event 7045), starts, then exits within one second, before the game initialises.

ALREADY RULED OUT

1. AC version identical in the registry, in Program Files and in the game launcher. Clean uninstall followed by reinstall, installer exit code 0.

2. TPM 2.0 present, enabled and activated. Secure Boot on.

3. Memory integrity HVCI tested both on and off, with reboots.

4. 18 third party kernel drivers temporarily disabled as a test: Tencent ACE family, npcap, CPU-Z, ViGEmBus, NetEase UU, WeGame. No change.

5. Launched both as administrator and normally. No change.

6. A stale 1.0.12317156 installer in the game folder was downgrading the anti-cheat on every launch and hanging the Steam updater. That copy has been replaced with the 1.0.16371190 package.

SESSION IDS

hXg3ByTi6+Dx3d+8ss3KHZwKsHhQqsfXaBXTw4pt2owNFqQV (2026-11-10 16:39 UTC+8)

0XlnAifh5rPxi4HusM3KGoWkDlA6+V2W6p3lFssSCwc7oQPU (2026-11-10 16:07 UTC+8)

Has anyone else hit this after the latest patch? Does anyone know what ExitType 0x6334795AEAA98519 actually means? The EA support web form will not submit on my side, so I am posting here as well.