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What is ntoskrnl.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the ntoskrnl.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

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Ntoskrnl.exe file information

The process known as NT Kernel & System belongs to software Microsoft Windows Operating System by Microsoft (www.microsoft.com).

Description: The original ntoskrnl.exe is an important part of Windows and rarely causes problems. Ntoskrnl.exe is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 3,912,576 bytes (25% of all occurrences), 3,944,680 bytes, 3,943,144 bytes or 3,945,192 bytes. http://www.file.net/process/ntoskrnl.exe.html 
The file is a Windows system file. The ntoskrnl.exe file is a trustworthy file from Microsoft. The program has no visible window. The file has a digital signature. ntoskrnl.exe appears to be a compressed file. Therefore the technical security rating is 0% dangerous, however you should also read the user reviews.

Uninstalling this variant: If you still experience problems with ntoskrnl.exe, you could also do the following:
  1) uninstall Microsoft Windows from your computer using the Control Panel applet Uninstall a Program
  2) contact www.microsoft.com to assist you.

Recommended: Identify ntoskrnl.exe related errors

Important: Some malware disguises itself as ntoskrnl.exe, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the ntoskrnl.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.

Score

User Comments

The system process is responsible for the system memory and compressed memory in the NT kernel. This system process is a single thread running on each processor. It is the host of all kind of drivers (network, disk, USB). The related file name is C:\Windows\System32\ntoskrnl.exe. The system process in Windows 10 has a additional task, it is compressing old pages of memory so that you have more free memory to use. That's why this process may use a lot of memory. If you see high cpu usage of the system process (more than 30%), than see this troubleshooting guide. The system process has always the PID 4 (Process Identification) in the Windows Task Manager, otherwise it is malware. http://www.neuber.com/taskmanager/process/system.html
  Ax   (further information)
The system process is responsible for the system memory and compressed memory in the NT kernel. This system process is a single thread running on each processor. It is the host of all kind of drivers (network, disk, USB). The related file name is C:\Windows\System32\ntoskrnl.exe. The system process in Windows 10 has a additional task, it is compressing old pages of memory so that you have more free memory to use. That's why this process may use a lot of memory. If you see high cpu usage of the system process (more than 30%), than see this troubleshooting guide. The system process has always the PID 4 (Process Identification) in the Windows Task Manager, otherwise it is malware.
  Ax   (further information)
Der Sytemprozess ist zuständig für den Systemspeicher und komprimierter Speicher im NT Kernel. Dieser Prozess ist ein einziger Thread, der auf jedem Prozessor läuft. Er ist zuständig für viele Treiber (Netzwerk, Festplatten, USB). Die dazu gehörige Datei ist C:\Windows\System32\ntoskrnl.exe. Der Systemprozess in Windows 10 hat eine zusätzliche Aufgabe: ungenutzten Arbeitsspeicher zu kopmrimieren um mehr freien Speicher zur Verfügung zu stellen. Deshalb kann dieser Prozess sehr viel Speicher verwenden. Wenn der Systemprozess mehr als 30% CPU benötigt, dann siehe diese Microsoft Anleitung. Der Systemprozess hat immer die PID 4 (Process Identification) im Windows Task Manager, anderenfalls handelt es sich um einen Schädling.
  Ax   (further information)
Kann beim Booten einen Bluescreen verursachen.
  e.b.  

Summary: Average user rating of ntoskrnl.exe: based on 4 votes with 4 user comments. 4 users think ntoskrnl.exe is essential for Windows or an installed application.


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Best practices for resolving ntoskrnl issues

A clean and tidy computer is the key requirement for avoiding problems with ntoskrnl. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the ntoskrnl.exe process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.



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ntoskrnl.exe [all]