Most antivirus programs identify nls.exe as malware.
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Description: Nls.exe is not essential for Windows and will often cause problems. The nls.exe file is located in a subfolder of "C:\Program Files" (usually C:\Program Files\NaviSearch\bin\).
The file size on Windows 8/7/XP is 86,016 bytes.
The application is loaded during the Windows boot process (see Registry key: MACHINE\Run). The nls.exe file is not a Windows system file. The program is not visible. Therefore the technical security rating is 50% dangerous, however you should also read the user reviews.
If you still experience problems with nls.exe, you can uninstall the associated program (Start > Control Panel > Add/Remove programs > NaviSearch).
Recommended: Identify nls.exe related errors
External information from Paul Collins:
Important: You should check the nls.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.
A clean and tidy computer is the key requirement for avoiding problems with nls. 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 doing a repair of your installation, or in the case of Windows 8, 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 nls.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.