The file expfix.exe with file size in Windows XP of 93,663 bytes is an executable process with no known description or related application. This program has a visible window, and is classified as a security threat that is associated with the Backdoor. Win32.Rbot.gen by Microsoft Security and Kaspersky Lab. The Backdoor.Win32.Rbot.gen is a generic detection for a family of backdoor Trojans that allow attackers to control infected computers. This Trojan connects to a specific IRC server and joins a specific channel to receive commands from its developers. It spreads to other computers by scanning for network shares with weak passwords and exploits the vulnerabilities found in some Windows applications. This backdoor Trojan has the capability to redirect TCP traffic, monitor network traffic, and retrieve computer configuration information, user account information, open shares, file system information, and network connection information. It is able to scan ports on the network, and download and execute remote files.

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

A process usually a part of an installed application such as Trojan, 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 expfix.exe. 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 expfix.exe, belongs to, in this case Trojan