The process file fwdrv.sys is a Windows driver, which is described to be as a minute program that permits the communication between the computer with other devices and hardware has permission to the internals of the Operating System and hardware. The process file is identified as Kerio Firewall, Sunbelt Firewall Engine, and Sunbelt Personal Firewall FWDRV that is part of the software Tiny Personal Firewall Driver, Kerio Personal Firewall, Kerio Personal Firewall Driver, Firewall Driver and Sunbelt Personal Driver. The process file is utilized by Tiny Personal Firewall that causes BSOD while doing kernel debugging, is created by Sunbelt Software and Kerio Technologies. The process file is located in C:\Windows\System32\drivers that has a file size on Windows 7/XP of 286,720 bytes (21% of all incidences), 102,912 bytes and 8 other variants. It can begin and end from Services in the Control Panel or by other programs. The process file fwdrv.sys has no visible window and is neither considered as a Windows system file, however is a compressed file with a certificate that has been signed by Sunbelt Software and issued by Verisign Time Stamping Services Signer.

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

A process usually a part of an installed application such as Sunbelt Firewall Engine, 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 fwdrv.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 fwdrv.sys, belongs to, in this case Sunbelt Firewall Engine