The executable inststub.exe is part of Norton 360, a comprehensive suite of antivirus applications for PC security, both online and offline. The file is a legitimate file that is installed with the Norton AV software. You can find the file in C:\Program Files\Norton Installer\inststub.exe. This file is about 712.7 KB, which uses about 9 MB of RAM space, on average. Users found no issues with the software, or the file itself, when it concerns the way it protects the PC. The only problem that most users encountered was the AV software itself asking if the user wants to execute the inststub.exe file, and if it is a safe file. Before the error message occurred, user uninstalled the AV software and then re-installed again to address another system issue. With the new installation, the error message occurred. It was later found that the uninstall was not as thorough as it should have been, which means remnants of the registry keys were left.

Most non-system processes that are running can be stopped because they are not involved in running your operating system. inststub.exe. is used by Norton 360, If you shut down inststub.exe, it will likely start again at a later time either after you restart your computer or after an application start. To stop inststub.exe, permanently you need to uninstall the application that runs this process which in this case is Norton 360, 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 inststub.exe

A process usually a part of an installed application such as Norton 360, 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 inststub.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 inststub.exe, belongs to, in this case Norton 360