The LiveUpdate service for Symantec’s Antivirus Suite is installed on your PC with the executable lucomserver_3_4.exe. By default, the process launches automatically after boot-up to look for updates and install as necessary. The process is an important feature for your AV. You may however, disable it if you find it hogging the CPU, as was the experience of several users. The CPU-hogging behavior of the process was observed to occur several times per computer use. Most of the users disabled the file and opted instead to do manual updates of their AV; also opting to keep their Symantec AV instead of switching to another AV software. The file is usually stored in C:\Program Files\Symantec\LiveUpdate\lucomserver_3_4.exe. Average size is 3220,856 bytes. There have also been reports of the file failing to install the necessary updates, prompted by the following message: “LiveUpdate returned non-critical error. Available content updates may have failed to install.” Usually, doing a manual update helped solve the error.

Most non-system processes that are running can be stopped because they are not involved in running your operating system. lucomserver_3_4.exe. is used by Symantec LiveUpdate, If you shut down lucomserver_3_4.exe, it will likely start again at a later time either after you restart your computer or after an application start. To stop lucomserver_3_4.exe, permanently you need to uninstall the application that runs this process which in this case is Symantec LiveUpdate, 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 lucomserver_3_4.exe

A process usually a part of an installed application such as Symantec LiveUpdate, 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 lucomserver_3_4.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 lucomserver_3_4.exe, belongs to, in this case Symantec LiveUpdate