Pgfilter.sys is a file belonging to PeerGuardian software. PeerGuardian is a program that is free and open source. It is developed by Phoenix Labs. The pgfilter.sys file is a necessary service of PeerGuardian. It is responsible in blocking any incoming and outgoing connection. This connection is based on the IP blacklists. The system file can also block custom ranges based on the preference of the user. There are two versions of PeerGuardian and both use the pgfilter.sys file. PeerGuardian has been a popular software among users of P2P. Version 1 is only capable of blocking common TCP protocol and has been known to use a lot of RAM and CPU resources when it is connected to P2P networks. Version 2 is able to carry more protocols such as TCP, UDP, ICMP, among others. It also consists of multiple block lists and automatic updates. It uses lesser computer power and memory. It also does not require system restart and driver installation.
How can I stop pgfilter.sys and should I?
Most non-system processes that are running can be stopped because they are not involved in running your operating system. pgfilter.sys. is used by PeerGuardian, If you shut down pgfilter.sys, it will likely start again at a later time either after you restart your computer or after an application start. To stop pgfilter.sys, permanently you need to uninstall the application that runs this process which in this case is PeerGuardian, 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.
Is this a virus or other security concern?
ReviverSoft Security Verdict
The ReviverSoft experts have not yet reviewed pgfilter.sys
Please review pgfilter.sys and send me a notification once it has been reviewed.
What is a process and how do they affect my computer?
A process usually a part of an installed application such as PeerGuardian, 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.
Is pgfilter.sys known to be bad for my computer's performance?
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.
What can I do if pgfilter.sys is causing errors on my computer?
The first thing you should do if pgfilter.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 pgfilter.sys, belongs to, in this case PeerGuardian