How to Fix 0x18 Pre-Authentication Information Was Invalid Error

Introduction

Have you encountered the 0x18 pre-authentication information was invalid error while trying to access a Windows computer? This error message can be frustrating and confusing, leaving you with limited access to your computer. However, with proper troubleshooting techniques, you can quickly fix this error and regain full access to your system.

What is the 0x18 Pre-Authentication Information Was Invalid Error?

The 0x18 pre-authentication information was invalid error is a Windows authentication error that occurs when attempting to log into a computer or access a network resource. This error indicates that the pre-authentication data sent by the computer was invalid or incorrect, preventing access to the resource or system.

Causes of the 0x18 Pre-Authentication Information Was Invalid Error

Various factors can cause the 0x18 pre-authentication information was invalid error. Some of the reasons include a corrupt user profile, incorrect logon credentials, network issues, outdated Windows or drivers, or malware infection. Identifying the root cause of this error is crucial to successfully fixing it and regaining full access to your system.

How to Fix the 0x18 Pre-Authentication Information Was Invalid Error

Fixing the 0x18 pre-authentication information was invalid error requires specific troubleshooting techniques. Follow the steps below to resolve this issue and regain access to your device:

Step 1: Restart Your Computer

Restarting your computer is a basic troubleshooting technique that can help resolve the error. After restarting the system, try logging in and check if the error persists.

Step 2: Check Your Network Connection

Ensure that your computer is connected to a stable network before attempting to log in. If your connection is unstable, it can cause authentication errors.

Step 3: Disable the Antivirus

Your antivirus software may interfere with the authentication process and cause errors. Disable your antivirus temporarily and try logging in again.

Step 4: Use the Correct Credentials

Frequently, incorrect logon credentials lead to the error. Ensure that you enter the correct username and password before attempting to log in.

Step 5: Run a Malware Scan

Malware infection can cause authentication errors, including the 0x18 pre-authentication information was invalid error. Run a full system scan for malware and remove any threats found.

Step 6: Update Your Windows and Drivers

Outdated Windows or drivers can cause authentication errors. Therefore, ensure that your Windows and drivers are up to date.

Step 7: Create a New User Account

If all the above steps fail, consider creating a new user account and transfer your data to the new account to resolve the issue.

Conclusion

Fixing the 0x18 pre-authentication information was invalid error is critical to regain access to your system or network resources. By following the above troubleshooting steps, you can successfully resolve this error and avoid future occurrences. Remember, identifying the root cause of the error is crucial in selecting the appropriate solution technique.