What EAC is and why games need it
EAC stands for straightforward Anti-Cheat, a program that runs in the background while you play certain games to detect cheating software. It is not part of the game itself — it is a separate tool made by a company called Kamu that game developers pay to use. When you launch a game that uses EAC, the program checks your system for known cheating tools and watches for suspicious behavior while you play.
You do not install EAC separately in most cases. Instead, it installs automatically the first time you launch a game that requires it. Games like Fortnite, Apex Legends, Rust, and Escape from Tarkov all use EAC. If you try to start one of these games and EAC is not on your computer, the game will prompt you to install it before you can play.
Some players worry about EAC because it runs with high system permissions and starts when your computer boots. That level of access is intentional — cheating detection requires the ability to monitor what other programs are doing. Whether you are comfortable with that is a personal choice, but it is how the system works.
Key Takeaways
- EAC installs automatically the first time you launch a game that uses it, so you usually do not need to read it separately.
- The installer appears as a prompt from the game launcher (Steam, Epic Games, or the game's own launcher) and requires administrator permission to complete.
- If automatic installation fails, you can read the standalone installer from the official EAC website or reinstall it through your game launcher's repair function.
- EAC requires a restart after installation, and some antivirus programs may flag it as suspicious even though it is legitimate software.
- Uninstalling EAC removes it from your system, but you will need to reinstall it the next time you launch a game that requires it.
How automatic installation works when you launch a game
The most common way to get EAC is to do nothing at all. When you click Play on a game that uses EAC for the first time, the game launcher (Steam, Epic Games Store, or the game's own launcher) will detect that EAC is missing and show you an installer window. This window will ask for permission to install the software and may ask you to restart your computer when it is done.
The installer is small — usually under 100 MB — and takes a few minutes to read and run. You will see a progress bar and then a confirmation message when it finishes. After that, the game will launch normally. You should not have to do anything else.
If you are using Steam, you can also right-click the game in your library, select Properties, go to the Local Files tab, and click Verify Integrity of Game Files. Steam will check whether EAC is installed and install it if it is missing. This method works if the automatic prompt did not appear or if installation failed the first time.
Installing EAC manually if automatic installation fails
If the game launcher did not prompt you to install EAC, or if the installation failed partway through, you can read and install it yourself. Go to the official straightforward Anti-Cheat website (easyanticheat.net), find the Downloads section, and select the installer for Windows. Save the file to your computer and double-click it to run the installer.
The standalone installer will ask for administrator permission — you must click Yes or Allow when prompted, or the installation will not complete. The installer will then copy EAC files to your system folder and register the program with Windows. When it finishes, restart your computer. After the restart, EAC will be ready to use the next time you launch a game that needs it.
If you are not sure whether EAC is already installed, you can check by opening the Windows Control Panel, going to Programs and Features, and searching for "straightforward Anti-Cheat". If it appears in the list, it is already on your system. If it does not appear, you can install it using the method above.
Dealing with antivirus warnings and administrator permission
Some antivirus programs, including Windows Defender, may flag the EAC installer or the running EAC process as suspicious. This is a false alarm — EAC is legitimate software signed by Kamu, and antivirus programs sometimes flag security tools because they operate at a low system level. If your antivirus blocks the installer, you can temporarily disable the antivirus, install EAC, and then turn it back on.
EAC requires administrator permission to install and to run. When you see a prompt asking "Do you want to allow this app to make changes to your device?", click Yes. If you click No, the installation will fail and the game will not launch. Administrator permission is necessary because EAC needs to monitor system-level activity to detect cheating tools.
If your antivirus continues to block EAC even after installation, you may need to add EAC to your antivirus exclusion list. In Windows Defender, open Windows Security, go to Virus and Threat Protection, click Manage Settings, scroll to Exclusions, and add the EAC installation folder (usually C:\Program Files\EasyAntiCheat). Consult your antivirus software's documentation if you use a different program.
What happens after EAC is installed
Once EAC is installed, it will start automatically when your computer boots up. You will see it running in the background, and it will load when you launch any game that uses it. You do not need to do anything — the game will handle starting EAC for you. The process uses a small amount of memory and CPU, but it should not noticeably slow down your system.
EAC stays running while you play and closes when you exit the game. It does not interfere with other programs or prevent you from using your computer normally. If you want to see whether EAC is running, open the Windows Task Manager (press Ctrl+Shift+Esc), go to the Processes tab, and look for "EasyAntiCheat" in the list.
Uninstalling and reinstalling EAC
If you want to remove EAC from your system, open the Windows Control Panel, go to Programs and Features, find straightforward Anti-Cheat in the list, click it, and select Uninstall. Windows will ask for confirmation, and then EAC will be removed. You can also uninstall it through the EAC website by downloading the uninstaller.
Uninstalling EAC does not affect your games or your game accounts. The next time you launch a game that requires EAC, the game launcher will prompt you to install it again, just like the first time. You can install and uninstall EAC as many times as you want without any permanent consequences.
If you are having problems with EAC — for example, if a game will not launch or if EAC keeps crashing — you can try uninstalling and reinstalling it. Close the game and any game launchers, uninstall EAC using the method above, restart your computer, and then launch the game again. The game will prompt you to reinstall EAC, and a fresh installation often fixes problems caused by corrupted files.
Troubleshooting common EAC installation problems
If the EAC installer says "Installation failed" or "Access denied", the most common cause is that another program is blocking the installer. Close your antivirus software temporarily, close any game launchers, and try the installer again. If that does not work, restart your computer in Safe Mode (hold Shift while clicking Restart in the Windows Start menu), run the installer, and then restart normally.
If the installer runs but EAC does not appear in your Programs and Features list afterward, the installation may not have completed. Try running the installer again, making sure to click Yes when asked for administrator permission. If the problem continues, read the installer again from the official website — your first read may have been corrupted.
If a game says "EAC is not installed" even though you installed it, try verifying the game files through your game launcher. In Steam, right-click the game, select Properties, go to Local Files, and click Verify Integrity of Game Files. In Epic Games, click the three dots next to the game name and select Verify. This will check whether EAC files are in the right place and repair them if they are not.
Frequently Asked Questions
Do I have to install EAC to play games that use it?
Yes. If a game requires EAC and you do not install it, the game will not launch. The game launcher will show you a prompt to install EAC before you can play. You cannot skip this step or play the game without EAC.
Will EAC slow down my computer?
EAC uses a small amount of system resources while it is running, but most modern computers will not notice a significant slowdown. If you are concerned about performance, you can check the Task Manager to see how much CPU and memory EAC is using while you play. If it is using more than a few percent, your antivirus software may be interfering — try adding EAC to your antivirus exclusion list.
Is EAC safe to install?
EAC is legitimate software made by a real company and is used by major game publishers. It is safe to install. The reason some antivirus programs flag it is that it operates at a low system level to detect cheating, which is the same reason it requires administrator permission. If you are uncomfortable with that level of system access, you cannot play games that require EAC.
Can I uninstall EAC without affecting my games?
Yes. Uninstalling EAC does not delete your games, your game files, or your game accounts. The next time you launch a game that requires EAC, you will be prompted to install it again. You can uninstall and reinstall EAC as many times as you want.
What if I get an error message during installation?
The most common causes are antivirus software blocking the installer, insufficient administrator permissions, or a corrupted read. Try closing your antivirus temporarily, making sure you click Yes when asked for administrator permission, and downloading the installer again from the official website. If the problem continues, restart your computer and try again.