EA Javelin Anti-Cheat on FC 27: How It Works and How to Fix It

What EA Javelin actually is

Javelin is described by EA as a lightweight kernel-mode anti-cheat and anti-tamper solution. "Kernel-mode" means it runs at the same privilege level as your operating system rather than as an ordinary application.

The reasoning is straightforward: the more capable cheats also operate at that level, and a user-mode anti-cheat simply cannot see them. Running in the kernel is how EA gets visibility into memory tampering and driver-level manipulation.

The part people usually get wrong: Javelin does not run all the time. It launches automatically with FC 27 and shuts down when the game closes. It is not a startup service and it is not sitting in the background while you do other things on your PC.

What your PC needs

There is a hard requirement most players never think about until it bites: Windows 10 version 20H1 (build 10.0.19041) or newer. Anything older and Javelin refuses to initialise, which means FC 27 will not launch.

You can check your build in seconds — press Windows + R, type winver, press Enter, and read the version line. If it shows anything below 19041, you need a Windows update before launch day, not on it.

Secure Boot and up-to-date chipset and GPU drivers also matter more than usual with kernel anti-cheat, because outdated or unsigned drivers are a common cause of initialisation failures.

Every EA AntiCheat error code, decoded

The error numbers are opaque but each one points at something specific:

• #6 — "Your Windows version is not supported." You are below Windows 10 build 19041. Update Windows; nothing else will fix it.
• #95 — unacceptable system configuration. Something about the machine state is rejected. Usually Secure Boot settings, virtualisation conflicts, or another security tool holding the same hooks.
• #119 — incompatible or outdated driver. A driver on your system is flagged. Update chipset, GPU and any peripheral drivers; old overclocking and RGB utilities are frequent culprits.
• #701 — Windows file system transaction log corruption. A filesystem issue rather than a game issue. Run chkdsk on the affected drive.

If EA AntiCheat fails to update rather than throwing a numbered error, the reliable fix is a restart followed by a clean reinstall of the anti-cheat component specifically — not the whole game.

What Javelin sees and what it does not

Kernel anti-cheat is powerful but narrow. Javelin is a client-side system: it watches what happens on your machine while the game is running.

That is only half of EA's detection. The other half is server-side behavioural analysis — results, win patterns, market activity, timing data — plus manual review triggered by player reports. Those run regardless of what is happening on your PC, and historically they account for a large share of enforcement.

The practical implication is one most sellers will not say out loud: a tool being invisible to the anti-cheat does not make an account invisible. Behaviour is the bigger risk. Winning every match 7-0 generates reports, and reports generate human review.

What this means if you run third-party tools

We are not going to publish anything about how our toolkit interacts with Javelin at a technical level, and you should be sceptical of any site that does — that information is only useful to EA.

What we will say plainly: every build we ship is tested against the current retail FC 27 client before it goes out, and when EA updates the game we pause rather than let people run a stale build into a changed anti-cheat. That pause is the system working correctly, not the service failing.

What we will not claim is that anything is unbannable. Nothing is. Anyone promising you a permanent guarantee against a kernel anti-cheat backed by server-side analysis is selling you a story. Our full position on risk is in the ban-risk guide, and it is worth reading before you buy anything from anyone — including us.