Error Message: "Cannot Find Device File Cyberkrn.vxd" (303347)

IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows Registry

The third-party products that are discussed in this article are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.

SYMPTOMS

When you start your computer, you may receive the following error message:

Cannot find a device file that may be needed to run Windows or a Windows application.

The Windows registry or SYSTEM.INI file refers to this device, but the device file no longer exists ...C:\progra~1\mcafee\mcafee\CYBERKRN.VXD.

If you still want to use the application associated with this device file, try reinstalling that application to replace the missing file.

This missing file is Cyberkrn.vxd.

NOTE: The path to the Cyberkrn.vxd file in the error message may be different on your computer.

CAUSE

The Cyberkrn.vxd file is a component of the McAfee Oil Change program. This behavior occurs when the registry refers to the Cyberkrn.vxd file, but the file no longer exists on your hard disk or the program is damaged. As a result, when you start your computer, the Cyberkrn.vxd file is requested but not found.

RESOLUTION

To resolve this issue, contact McAfee for support on how to install the McAfee Oil Change program, as well as information on other issues that arise with McAfee Oil Change.

To work around this issue, remove the entry for the Cyberkrn.vxd file from the Windows registry. To do this, follow these steps.

WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

Click Start, and then click Run.
In the Open box, type regedit, and then click OK.
Locate the following registry key:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\
In the right pane, click Cyberkrn, and then click Delete on the Edit menu.
Quit Registry Editor.
Restart your computer.

MORE INFORMATION

For information about how to contact McAfee, click the appropriate article number in the following list to view the article in the Microsoft Knowledge Base:

65416 Hardware and Software Third-Party Vendor Contact List, A-K

60781 Hardware and Software Third-Party Vendor Contact List, L-P

60782 Hardware and Software Third-Party Vendor Contact List, Q-Z