Also known as ThreatFire Update Engine, the tfun.exe process is an executable file that is part of the program ThreatFire, which is created and digitally signed (VeriSign Time Stamping Services Signer - G2) by PC Tools. ThreatFire is a type of a security program, featuring an advanced patent-pending technology, that does not rely on signatures, but rather diagnoses and examines the behavior of the computer to detect any malicious activities, and later block or prevent them from damaging the system, as well as infecting other programs or files in it. It does protect the computer, including the processes and applications, from viruses, worms, Trojans, spyware, and other dangerous files. This also does not require a user to update the application whenever a new threat is detected or has occurred, and that’s what the file process tfun.exe does. It constantly monitors the computer activity to scan and hunt down any threats it detects.

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

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