If you recently updated your computer, it is possible that the EndpointLock was scanning the kernel for unknown drivers during the update, leading to a false positive. Please try restarting your computer and see if the error message reappears when EndpointLock starts. If no message appears then your computer is secure, and no further action is needed. If the message does reappear please follow the steps below.
In the folder [C:\WINDOWS\system32\drivers\] the file “DKbFltr.sys” shows 0kb in size.
In the 64-bit folder [C:\WINDOWS\sysWOW64\drivers\], there is a “DKbFltr.sys” and its size is ~25kb, and it is properly signed (view its properties)
If this is the case, delete the 0kb file C:\WINDOWS\system32\drivers\DKbFltr.sys and the EndpointLock™ Status will return to normal. Acer laptops with Windows 7 64-bit are likely to have this problem.