Sentinel.sys is a process also known as the Sentinel System Driver NT Parallel driver or the Rainbow Technologies Sentinel Driver. This process belongs to the Sentinel System Driver which is owned by Rainbow Technologies. Sentinel.sys is usually located under the C: Directory down the Windows folder then systems32 and drivers. This file has the size of 76,288 bytes in the Hard Disk Drive (HDD). But this size may differ depending on the operating system used. This program can be started or can be ceased through the Control Panel. This file type is not a Windows file type and does not belong to the windows core system files. Sentinel.sys is file which is compressed which makes the size smaller than the original size of the file. This file only works on the Microsoft Operating system such as Windows XP, Window Vista, Window 7. This process was digitally signed by Rainbow Technologies and this only means that this process belongs to the well trusted company of the Microsoft Operating system.

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

A process usually a part of an installed application such as Sentinel System Driver, 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 sentinel.sys. 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 sentinel.sys, belongs to, in this case Sentinel System Driver