Easy Anti-Cheat

Updated

EVE Vanguard utilizes Easy Anti-Cheat to ensure a satisfying player experience and deter exploits, cheats, and threats. For more about Easy Anti-Cheat and for advice with issues you might experience with the system, we recommend checking out EAC's support site here: Easy Anti-Cheat Player Support FAQs

You may also be able to find answers for some of the more common issues listed below:

Manually Repairing Easy Anti-Cheat

If there is a problem with Easy Anti-Cheat, such as an error when you try to start a game using it, you can try using the service self-repair feature.
1. Open a Command Prompt as Administrator
2. Run the command: cd C:\Program Files (x86)\EasyAntiCheat_EOS
3. Run the command: EasyAntiCheat_EOS.exe repair It is normal that no text is output. The next command will confirm that it worked.
4. Run the command: echo %ERRORLEVEL%If you see 0 then the repair operation succeeded. If you see something else then it failed. Make sure you are running an Administrator Command Prompt and try again.
 

Error: Easy Anti-Cheat is not installed

Why am I seeing this error? The EAC service has not been installed, which is a prerequisite for the EAC driver to load. This may have failed due to the game’s install script not correctly handling service installation, or something blocking the installation process when the game was installed.

Navigate to the game’s root directory and look for the “EasyAntiCheat” subdirectory (default C:\CCP\EVE\eve-vanguard\live\WindowsClient\EasyAntiCheat). There, you should find both of the following:

  • EasyAntiCheat_EOS_Setup.exe
  • Settings.json

Once there, follow these steps:

1. Copy the productid field from Settings.json

2. Open Command Prompt as Administrator

3. Navigate to the EasyAntiCheat subdirectory by typing in cd <path>

4. Run the command: EasyAntiCheat_EOS_Setup.exe install <productid>

  • It is normal that no text is output. The next command will confirm that it worked.

5. Run the command: echo %ERRORLEVEL%

  • If you see 0, the install operation succeeded. If you see something else, it failed. Make sure you are running an Administrator Command Prompt and try again.

Error: Maximum simultaneous game instances reached!

Why am I seeing this error? The EAC service limits the active count of game client instances to a developer-specified value. This value is not directly visible to the player, but is often between 1-3.

Start by opening up the Task Manager to see if the game process has been left in a hidden state. Should that be the case, kill it from the Task Manager and try launching the game again.

If you encounter the error and cannot find the game process in the Task Manager, something has likely prevented the EAC driver from unloading. That means a system reboot is required for it to unload.

Error: Unknown file version: <>

Why am I seeing this error? The EAC service detected that a game file has been modified and does not match the expected state. Typically, the issue is caused by the file having been modified by either the player or software on their system.

Try verifying the game installation through the EVE Launcher.

  • On the Launcher click the cogwheel at the top-right of the window
  • Click EVE Vanguard
  • Click Verify Game Files

Should the file validation inform you that the files have been successfully validated, you may want to run Prime95 to ensure the errors are not occurring due to faulty hardware.

Error 20010: Easy Anti-Cheat installation folder has been encrypted

Why am I seeing this error? The EAC service’s installation directory has been encrypted by the operating system and is preventing the service from launching successfully.

Navigate to the EAC service’s installation directory. By default, this is C:\Program Files (x86)\EasyAntiCheat_EOS\, but your installation directory may differ if you have system files on a driver other than C.

Once found, right click the installation directory and select Properties → Advanced and untick:

Encrypt contents to secure data

Error 30005

Why am I seeing this error? The EAC service was unable to start the game. This error is usually accompanied by a more detailed message like "CreateFile failed with 32." The most common cause of the 30005 error is that an EAC file on disk has been locked by another program and cannot be accessed.

Rebooting is the simplest way to resolve this problem. If it happens repeatedly, another piece of installed software like anti-virus may be interfering with the operation of the anti-cheat. Consider adding an anti-virus exclusion for the Program Files (x86)\EasyAntiCheat_EOS directory. You can do this by adding EasyAntiCheat_EOS.exe to the exclusions list in your Windows Security settings.

Software & System Compatibility

Why does EAC block certain software on my PC?

EAC blocks software that interacts with games in ways that look identical to cheating techniques. On rare occasions, this could include legitimate software whose behavior relies on special access to the game process or system - such as overlays, hardware monitoring and performance tools, or automation software.

If EAC blocks your software, try these steps in order:

  1. Temporarily close the conflicting software before launching the game
  2. Update the software to the latest version (many legitimate tools have added EAC compatibility)
  3. Check if the software has a "game mode" that disables memory injection features
  4. Launch the game first, then the overlay/tool (works for some overlay software)
  5. Add exceptions in the software's settings to exclude the game process

Most legitimate software conflicts can be resolved by updating or temporarily closing the application. The blocking is not permanent - it only prevents interaction while the game is running.

Why does EAC tell me to close certain software on my PC?

EAC may block software that has known vulnerabilities which can be abused for cheating. This most often affects hardware monitoring or control software (such as RGB lighting tools) that use outdated kernel drivers to access system resources. If EAC tells you to close a piece software on your machine, try these steps in order:

  1. Temporarily close the conflicting software before launching the game
  2. Update the software to the latest version (many legitimate tools address security issues with updates)
  3. Add exceptions in the software's settings to exclude the game process

Why do anti-cheat systems sometimes block modding tools?

Many modding tools modify game files or inject code into the running game process. Because these same methods can also be used to create cheat software, anti-cheat systems may block them in multiplayer environments.

Some games provide separate mod-enabled modes where anti-cheat protection is disabled to allow safe experimentation.

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