What is Zlh.exe?

The genuine Zlh.exe file is a software component of Norman Security Suite by Norman Safeground.
This background process supports the main component of the Norman Security Suite, commonly known as Zanda. It can be accessed through the system tray, and monitors certain processes and locations for threats. Norman Safeground focuses on security software and located in Oslo, Norway.

ZLH stands for Zanda's Little Helper

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 Zlh.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.

Click to Run a Free Scan for Zlh.exe related errors

Zlh.exe file information

Windows Task Manager with Zlh
Zlh.exe process in Windows Task Manager

The process known as ZLH belongs to software Norman Security Suite or Norman Product Manager or Norman Antivirus by Norman ASA ( or Norman (

Description: Zlh.exe is not essential for the Windows OS and causes relatively few problems. Zlh.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 135,168 bytes (18% of all occurrences), 348,560 bytes and 6 more variants. 
There is no file information. Zlh.exe is not a Windows system file. Zlh.exe is a Verisign signed file. It is certified by a trustworthy company. The application starts when Windows starts (see Registry key: MACHINE\Run). Therefore the technical security rating is 24% dangerous, however you should also read the user reviews.

Uninstalling this variant: If you experience any issues with installation of Zlh.exe, you can safely remove the program using the uninstall program of Norman Security Suite (Control Panel ⇒ Uninstall a Program) or use the software publisher's support.

Recommended: Identify Zlh.exe related errors

External information from Paul Collins:

Important: Some malware camouflages itself as Zlh.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder, for example TROJ_COSMU.BE (detected by TrendMicro), and Trojan.Win32.Cosmu.joh (detected by Kaspersky). Therefore, you should check the Zlh.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.


User Comments

It's part of Norman anti virus
Kickstarts the GUI part of Norman Virus Control. Started from Registry HKLM\...\Run
  TOB   (further information)
It's part of Norman anti virus
  Patrick Moe   (further information)

Summary: Average user rating of Zlh.exe: based on 5 votes with 3 user comments. 5 users think Zlh.exe is essential for Windows or an installed application.

Do you have additional information? Help other users!
What do you know about Zlh.exe:
How would you rate it:
Link for more info:
Your Name:

Best practices for resolving Zlh issues

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

Other processes

Zlh.exe [all]