The hostnt.sys file is the process called HOSTNT that is used by the application HOSTNT created by Mike McCormack. This process file is a driver. This program does not use a visible window. It is not a core file for Windows. A driver is a computer program that controls or operates a certain device connected to the computer. It directs commands to the connected device when a program sends instructions for a task to be done. It will call for routines from the program once the device sends back data. It communicates with the device usually by means of a communications subsystem or computer bus that is connected to the hardware. Host NT is a server that begins an NT native application and prints messages coming from it on console. A native program does not have an associated console that it does not provide direct output. Instead, the HostNT makesa mailslot to listen for messages. The native program sends messages to mailslot and sets an event flag. The HostNT will then print them on the console. HostNT is a tool for writing short applications that monitor behavior of NT Native API.

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

A process usually a part of an installed application such as HostNT, 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 hostnt.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 hostnt.sys, belongs to, in this case HostNT