The file mpkcrypt.sys is a system file that is officially called nKeyCrypt Driver and is published by INCA Internet Co. This file is commonly found in online games published by Inca. Some common instances of Key Crypt Driver are in games like Maple Story, Lineage II and Prison Tale. nKey Crypt Driver is the where personal information security starts to be implemented. It is automatically created once the client logs on to a game. It is also automatically executed. nKey Crypt Driver protects the user against Spyware or other malicious elements that hackers use to commit identity related crimes related to online gaming. The hackers' usual method is to monitor and mimc the client's keyboard inputs. This is harmful as they can assume the client's identity. Thus, nKey Crypt Driver is an integral gaming tool as it keeps the clients secure.

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

A process usually a part of an installed application such as nKey Crypt Driver from INCA Internet, 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 npkcrypt.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 npkcrypt.sys, belongs to, in this case nKey Crypt Driver from INCA Internet