Solved: How do I fix the Event Viewer error “Skipping: Eap method DLL path validation failed”?

Question

There are 43000 of Windows Event viewer Application log errors in my Dell Latitude 5411 notebook. I cannot find out where they are coming from.

Skipping: Eap method DLL path validation failed. Error: typeId=43, authorId=9, vendorId=0, vendorType=0
Skipping: Eap method DLL path validation failed. Error: typeId=18, authorId=8086, vendorId=0, vendorType=0
Skipping: Eap method DLL path validation failed. Error: typeId=21, authorId=8086, vendorId=0, vendorType=0
Skipping: Eap method DLL path validation failed. Error: typeId=25, authorId=9, vendorId=0, vendorType=0

Follow the below solution steps to resolve Event Viewer error “Skipping: Eap method DLL path validation failed”.

Content Summary

Solution 1: Perform a Clean Boot
Solution 2: Remove EAP related registry key
Solution 3: Remove any EAP, LEAP, and PEAP components

Solution 1: Perform a Clean Boot

Place the computer in a Clean Boot and check if the issue is caused by any software conflicts. A clean boot helps to eliminate software conflicts and to determine what is causing the problem.

Follow the steps in this article to perform a clean boot on the computer: How Do I Perform Clean Boot State in Microsoft Windows 8, 10, 7, Vista and XP

After you have finished troubleshooting, follow these steps to boot to normal startup.

Step 1: Press the Windows + R key on the keyboard to open the Run box.

Step 2: Type MSCONFIG and click on the Ok button.

Step 3: Switch to the General tab.

Step 4: Click the Normal Startup option, and then click on the OK button.

Step 5: Click the Restart option.

Reference

• Microsoft Support > How to perform a clean boot in Windows
• Microsoft Community > EapHost Error 2002

Solution 2: Remove EAP related registry key

Step 1: Press Windows key + R to open a Run box.

Step 2: Type regedit and press Enter to open up the Registry Editor. Click Yes to grant administrative privileges when prompted by the UAC (User Account Control). If you are installing as a new OS, you need to press the Shift + F10 key to open the command prompt and type regedit.exe to open the Registry Editor.

Step 3: Navigate to the following location: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\EapHost\Methods\9

Step 4: There will be several entries referencing paths that don’t exist. Remove any of these type of keys.

Step 5: Perform the same steps for the following path: HKLM\System\CurentControlSet\Services\Eaphost\Methods\311

Step 6: Restart your PC.

Reference

• Justworks > EAP! Event logs are full of DLL path validation errors
• AskWoody > Error: event 2002 EAPHOST, & 1 other ?

Solution 3: Remove any EAP, LEAP, and PEAP components

Simply delete or uninstall any Cisco LEAP, Cisco PEAP, and Cisco EAP-fast components if you have not used any type of domain network yet and you are not still using any type of Cisco module. It would not cause any issues.

Reference

• TheTechMirror > What is Cisco Leap Module and Should you remove it from the system?