What is napstat.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 napstat.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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Napstat.exe file information

The process known as Network Access Protection Client UI or ab0bb9e3b144cac60965e5440a4ee583 belongs to software Microsoft Windows Operating System or ab0bb9e3b144cac60965e5440a4ee583 by Microsoft ( or SWIS.

Description: The original napstat.exe is an important part of Windows and rarely causes problems. Napstat.exe is located in a subfolder of C:\Windows. The file size on Windows 10/8/7/XP is 279,552 bytes. 
Napstat.exe is a Windows system file. The file is a Microsoft signed file. Therefore the technical security rating is 9% dangerous.

Recommended: Identify napstat.exe related errors

If napstat.exe is located in the Windows folder for temporary files, the security rating is 26% dangerous. The file size is 458,829 bytes. The program has a visible window. The software has no file description. The program starts when Windows starts (see Registry key: Run). It is not a Windows system file. napstat.exe appears to be a compressed file.

If napstat.exe is located in a subfolder of "C:\Program Files", the security rating is 42% dangerous. The file size is 120,320 bytes. The program has no visible window. The napstat.exe file is not a Windows core file.

Important: Some malware camouflages itself as napstat.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the napstat.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.


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Best practices for resolving napstat issues

A clean and tidy computer is the key requirement for avoiding problems with napstat. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic 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 resmon 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 DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the napstat.exe process on your computer, the following programs have proven to be helpful: Security 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. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

napstat.exe [all]