The process sntnlusb.sys, known as Rainbow Technologies Sentinel Device Driver, belongs to software Safenet USB UltraPro/SuperPro by Safenet. The operating systems supported by this driver are Windows 2000, XP, XP x64, Vista, Vista x64, Windows 7 an 7 x64, and Windows Server 2003 and 2003 x64. Device drivers are small files that act like liaisons between hardware and peripherals in the computer system and its operating system. The device drivers are required so that the operating system can see the devices and handle them effectively and efficiently. The process sntnlusb.sys supports the functionality of the device that is connected to the computer that utilizes the security protection software from Safenet. Device drivers sometimes do not work as well as intended or conflict with other components of the system. It is important for users to acquire the updated driver, which can be done by checking the manufacturer's Website.

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

A process usually a part of an installed application such as Safenet USB UltraPro/SuperPro, 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 sntnlusb.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 sntnlusb.sys, belongs to, in this case Safenet USB UltraPro/SuperPro