How to Download, Install and Fix the EA Javelin AntiCheat Installer
EA Javelin AntiCheat installs with your EA game and keeps its installer in C:\Program Files\EA\AC. Open that installer or download a fresh copy from EA Help to install, reinstall or fix Javelin. Jump to your situation below or work through the methods in order.
By Neeraj Singh ~5 min Updated Nov 2026 Checked against EA Help
Error message
EA Javelin Anticheat Service encountered an invalid system configuration/a system error. Please run the EA Javelin Anticheat Service installer.
Summary
EA Javelin AntiCheat installs itself with every EA game that uses it, so you do not need to download anything first. You need the installer when the game reports a missing or broken anti-cheat or when you must reinstall it. EAAntiCheat.Installer.exe sits in C:\Program Files\EA\AC and EA Help offers a fresh copy. Open it, select your game and select Install. Select Uninstall first for a clean reinstall. Javelin needs Windows 10 version 20H1 (10.0.19041) or newer, and Error 701 during install is a Windows file system fault you clear with fsutil resource setautoreset true C:\ from an elevated Command Prompt.
What the installer does
EA Javelin AntiCheat is the anti-cheat that EA games use on PC. Games that need it install it automatically, and the installer stays on your PC so you can add, repair or remove Javelin for any game later.
You open the installer yourself when a game says Javelin is missing, broken or out of date. Selecting Install adds the anti-cheat to a game and selecting Uninstall removes it, so a clean reinstall takes two short passes through the same window.
When you need the installer
The game finished installing but Javelin did not, so the anti-cheat is missing.
Javelin files were changed or damaged and the game reports an invalid system configuration.
You uninstalled Javelin and the protected game will not start until you add it back.
Windows is older than version 20H1 (10.0.19041), which Javelin does not support.
The Windows file system transaction log is stuck and the installer fails with Error 701.
2Open the downloaded installer and select your game from the list.
3Select Install and wait for the success message.
4Restart your PC and start the game from the EA app or Steam.
Method 2
Use the installer already on your PC
1Open File Explorer and go to C:\Program Files\EA\AC.
2Right-click EAAntiCheat.Installer.exe and select Run as administrator.
3Select your game and select Install.
4If the folder is missing, start the game from the EA app so it installs Javelin, or use Method 1.
Method 3
Reinstall Javelin cleanly
1Open EAAntiCheat.Installer.exe and select the game that fails, then select Uninstall. Select Uninstall All only if you want Javelin removed for every EA game.
2Close the installer and restart your PC.
3Open the installer again, select the game and select Install.
4Start the game. Protected games will not launch while Javelin is uninstalled, so finish this method before you test.
Method 4
Fix errors that stop the installer
1Error 701 means a Windows file system fault. Open Command Prompt as administrator and enter:
fsutil resource setautoreset true C:\
2Use your Windows drive letter if it is not C. Restart, then open the installer again.
3For "Your Windows version is not supported", open Windows Update, install every update and open the installer again. Javelin needs Windows 10 version 20H1 (10.0.19041) or newer.
4For "Failure during update process", close the pop-up and restart the game. If it returns, uninstall the game through the installer and install it again by hand.
5If the installer lists incompatible software or a driver, update that software and restart. Disable it if updating does not help.
EA Javelin AntiCheat installs with your EA game. To add it by hand, download the installer from EA Help or open EAAntiCheat.Installer.exe in C:\Program Files\EA\AC, select your game and select Install. Select Uninstall first for a clean reinstall. Error 701 during install needs fsutil resource setautoreset true C:\ in an elevated Command Prompt, and Javelin needs Windows 10 version 20H1 (10.0.19041) or newer.
Frequently asked questions
Where do I download the EA Javelin AntiCheat installer?
Download it from the EA Javelin anticheat page on EA Help, then select your game and select Install. Use EA's own page only, because a file from any other site is not guaranteed to be the real installer.
Where is EAAntiCheat.Installer.exe on my PC?
Open File Explorer and go to C:\Program Files\EA\AC. EAAntiCheat.Installer.exe is inside that folder. If the folder is missing, start your game from the EA app so it installs Javelin, or download the installer from EA Help.
Do I have to install EA Javelin AntiCheat myself?
No. Games that use Javelin install it automatically. You only use the installer by hand to troubleshoot an error or to add Javelin back after you uninstall it.
What happens if I uninstall EA Javelin AntiCheat?
Games that use Javelin will not start until you install it again. Uninstall removes it for one game and Uninstall All removes Javelin files and protection for every EA game, except for the installer itself. EA does not recommend uninstalling unless you are troubleshooting.
Which Windows version does the installer need?
Windows 10 version 20H1 (build 10.0.19041) or newer. If the installer reports that your Windows version is not supported, install the latest Windows updates and open it again.
Why does the installer fail with Error 701?
Error 701 points to a Windows file system problem. Open Command Prompt as administrator and enter fsutil resource setautoreset true C:\ using the drive Windows is on, then restart and open the installer again.
