The mfeavfk.sys file installs a process described as Anti-Virus File System Filter Driver. It is also known as Access Protection Filter Driver. The file is part of the software SYSCORE which is software from McAfee. The file appears to be part of McAfee Firewall, as determined by a number of clients. The general location of the file is in the Drivers subfolder of C:\Windows\System 32. Its actual file path is C:\Windows\System 32\Drivers\mfeavfk.sys. The file version that is most compatible with the Windows 7 version of Windows operating systems is version 14.4.0.478. This has an approximate size of 229,528 bytes. If the file is installed in a Windows XP-based PC, the version would most likely be 14.1.0.658. This specific file has a size of 76,024 bytes. Standard file location for this version is also in the Drivers subfolder of C:\Windows\System 32. The file has been mentioned to cause the Blue Screen of Death. It was found to have been caused by an outdated driver for the McAfee program that installed the file.

Most non-system processes that are running can be stopped because they are not involved in running your operating system. mfeavfk.sys. is used by Anti-Virus File System Filter Driver, If you shut down mfeavfk.sys, it will likely start again at a later time either after you restart your computer or after an application start. To stop mfeavfk.sys, permanently you need to uninstall the application that runs this process which in this case is Anti-Virus File System Filter Driver, from your system.

After uninstalling applications it is a good idea to scan you Windows registry for any left over traces of applications. Registry Reviver by ReviverSoft is a great tool for doing this.

The ReviverSoft experts have not yet reviewed mfeavfk.sys

A process usually a part of an installed application such as Anti-Virus File System Filter Driver, or your operating system that is responsible for running in functions of that application. Some application require that they have processes running all the time so they can do things such as check for updates or notify you when you get an instant message. Some poorly written applications have many processes that run that may not be required and take up valuable processing power within your computer.

We have not received any complaint about this process having higher than normal impact on PC performance. If you have had bad experiences with it please let us know in a comment below and we will investigate it further.

The first thing you should do if mfeavfk.sys. is causing errors on your computer is to run a Windows registry scan with Registry Reviver If you are still seeing errors after this you should uninstall the program that mfeavfk.sys, belongs to, in this case Anti-Virus File System Filter Driver