Troubleshooting VALORANT Vanguard Error Codes 128 and 57 on Windows Systems

Troubleshooting VALORANT Vanguard Error Codes 128 and 57 on Windows Systems

VALORANT, a popular free-to-play first-person shooter game, has gained immense popularity among PC gamers. However, some users have encountered error codes 128 and 57 related to the VALORANT Vanguard anti-cheat system. This article aims to provide a comprehensive analysis of these error codes, their potential causes, and effective solutions to resolve them on Windows 11 and Windows 10 systems.

Understanding Error Codes 128 and 57

Error code 128 typically appears with the message “VANGUARD NOT INITIALIZED” and suggests that the Vanguard Anti-Cheat system has not been properly initialized. This can occur during the initial installation or after a system update. On the other hand, error code 57 also displays the “VANGUARD NOT INITIALIZED” message, but it specifically indicates a glitch in the anti-cheat engine, corrupt Vanguard files, a disabled VGC service, or inconsistent DNS settings.

Causes of Error Codes 128 and 57

Several factors can contribute to the occurrence of error codes 128 and 57 in VALORANT:

  • Outdated Drivers: Using outdated drivers, especially for graphics cards and other essential hardware components, can lead to compatibility issues with Vanguard.
  • Unsigned Drivers: The presence of unsigned drivers on the system can conflict with Vanguard’s security checks, resulting in error codes.
  • Windows Testing Mode: Enabling Windows Test Signing Mode allows the execution of unverified drivers, which can interfere with Vanguard’s functionality.
  • Disabled VGC Service: The Vanguard service (VGC) is crucial for the proper operation of the anti-cheat system. If this service is disabled or not running correctly, error codes may arise.
  • Corrupt Vanguard Files: Corruption or damage to Vanguard files can hinder its proper functioning and cause error codes.
  • Inconsistent DNS Settings: Incorrect or unstable DNS settings can disrupt the communication between the game client and Vanguard servers, leading to error codes.

Resolving Error Codes 128 and 57

To effectively resolve error codes 128 and 57 in VALORANT, consider the following solutions:

1. Update Drivers:

  • Ensure that all drivers, particularly graphics card drivers, are up to date. Check for updates through the manufacturer’s website or use a driver update tool.

2. Identify Unsigned Drivers:

  • Utilize the sigverif utility to identify and remove any unsigned drivers that may conflict with Vanguard.

3. Disable Windows Testing Mode:

  • Turn off Windows Test Signing Mode to prevent the execution of unverified drivers that can cause issues with Vanguard.

4. Ensure VGC Service is Running:

  • Verify that the Vanguard service (VGC) is running. If not, start it manually or configure it to start automatically.

5. Repair VALORANT Client:

  • Run the VALORANT installer in repair mode to fix any corrupted or missing files.

6. Enable Data Execution Prevention (DEP):

  • Activate DEP in Windows to prevent malicious code injection and enhance system security.

7. Restart PC:

  • A simple restart of the PC can often resolve temporary glitches and allow Vanguard to initialize properly.

8. Uninstall and Reinstall Riot Vanguard:

  • Completely uninstall Riot Vanguard and VALORANT, then reinstall both programs to ensure a clean installation.

9. Enable VGC Service in System Configuration:

  • Use the System Configuration utility (msconfig) to enable the VGC service if it is disabled.

10. Adjust DNS Settings:

  • Configure the DNS settings to use reliable and stable DNS servers to improve network connectivity.


Error codes 128 and 57 in VALORANT can be frustrating for gamers, but by understanding their causes and implementing the solutions outlined in this article, users can effectively resolve these issues and enjoy a seamless gaming experience. Regular system maintenance, driver updates, and ensuring the proper functioning of the Vanguard service are essential for preventing these error codes from recurring.


What are the common causes of VALORANT Vanguard error codes 128 and 57?

These error codes can be caused by outdated drivers, unsigned drivers, enabled Windows Testing Mode, a disabled or malfunctioning VGC service, corrupt Vanguard files, and inconsistent DNS settings.

How can I resolve error code 128 related to Vanguard not being initialized?

To resolve error code 128, try updating drivers, identifying and removing unsigned drivers, disabling Windows Testing Mode, ensuring the VGC service is running, repairing the VALORANT client, enabling Data Execution Prevention (DEP), and restarting the PC.

What should I do if I encounter error code 57 indicating a Vanguard initialization issue?

For error code 57, consider restarting the PC, uninstalling and reinstalling Riot Vanguard, enabling the VGC service in System Configuration, and adjusting DNS settings to use reliable servers.

Why is it important to keep drivers up to date to prevent Vanguard error codes?

Outdated drivers can cause compatibility issues with Vanguard, leading to error codes. Regularly updating drivers ensures that hardware components function optimally and are compatible with the latest version of Vanguard.

What is the purpose of disabling Windows Testing Mode to resolve Vanguard errors?

Windows Testing Mode allows the execution of unverified drivers, which can conflict with Vanguard’s security checks. Disabling this mode prevents the use of such drivers and helps eliminate potential conflicts.

How does repairing the VALORANT client help resolve Vanguard error codes?

Repairing the VALORANT client can fix corrupted or missing files that may be causing Vanguard errors. Running the installer in repair mode scans for and replaces damaged files, ensuring the integrity of the game installation.

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