Many users claim that the l1rezerv.exe process is an executable program file that is associated with a malicious variant of the Trojan:Win32/Sisron family of Trojans, while other user reports state that the l1rezerv.exe file belongs to the Trojan.FakeAV family of rogue anti-virus applications and Trojans. The l1rezerv.exe process is said to be capable of creating and inserting keys and entries into the Windows System Registry upon its successful placement and execution in the system, in order to instruct the Windows-based system to allow the l1rezerv.exe process to automatically run during system startup. Upon its automatic initialization, the l1rezerv.exe process has been reported to be capable of operating as a background process without the user's consent during system runtime, in order to search for unsecure TCP/IP network ports that it can exploit and use to initiate contact with the remote servers of its authors. Upon connecting with these predesignated Web servers, the l1rezerv.exe process is said to be capable of downloading more malicious applications and uploading private user data, computer specifications, installed software details and Internet browsing information, which the l1rezerv.exe process is said to be able to gather with its malicious components from the infected system and its default Web browser, to the remote servers of its authors.

Most non-system processes that are running can be stopped because they are not involved in running your operating system. l1rezerv.exe. is used by Trojan:Win32/Sisron and Trojan.FakeAV, If you shut down l1rezerv.exe, it will likely start again at a later time either after you restart your computer or after an application start. To stop l1rezerv.exe, permanently you need to uninstall the application that runs this process which in this case is Trojan:Win32/Sisron and Trojan.FakeAV, 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 l1rezerv.exe

A process usually a part of an installed application such as Trojan:Win32/Sisron and Trojan.FakeAV, 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 l1rezerv.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 l1rezerv.exe, belongs to, in this case Trojan:Win32/Sisron and Trojan.FakeAV