What is wnpnl.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 wnpnl.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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Wnpnl.exe file information

The process known as Service Thread Handler belongs to software Thread Handler or IM Lock Professional by Comvigo (

Description: Wnpnl.exe is not essential for the Windows OS and causes relatively few problems. Wnpnl.exe is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 156,672 bytes (25% of all occurrences), 155,648 bytes, 81,920 bytes or 160,768 bytes. 
It is located in the Windows folder, but it is not a Windows core file. The program is not visible. It is not a Windows system file. The process starts upon Windows startup (see Registry key: MACHINE\Run). Wnpnl.exe is able to monitor applications, record keyboard and mouse inputs, hide itself and manipulate other programs. Therefore the technical security rating is 60% dangerous.

Recommended: Identify wnpnl.exe related errors

Important: Some malware camouflages itself as wnpnl.exe. Therefore, you should check the wnpnl.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 wnpnl issues

A clean and tidy computer is the key requirement for avoiding problems with wnpnl. 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 wnpnl.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

wnpnl.exe [all]