What is onlnsvc.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 onlnsvc.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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Onlnsvc.exe file information

The process known as qhonsvc Application belongs to software WinCleaner AntiVirus or Quick Heal Total Security by Quick Heal Technologies (P) (

Description: Onlnsvc.exe is not essential for Windows and will often cause problems. Onlnsvc.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 99,712 bytes (66% of all occurrences) or 90,112 bytes. 
The program has no visible window. The onlnsvc.exe file is not a Windows core file. It is a Verisign signed file. It is certified by a trustworthy company. Onlnsvc.exe is able to monitor applications. Therefore the technical security rating is 34% dangerous; however you should also read the user reviews.

Uninstalling this variant: You could completely remove Quick Heal Total Security or WinCleaner AntiVirus (Control Panel ⇒ Uninstall a Program).

Recommended: Identify onlnsvc.exe related errors

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

This massage is display on start the system than start
  rajiv sharma  

Summary: Average user rating of onlnsvc.exe: based on 1 vote with 1 user comment. One user thinks it's neither essential nor dangerous.

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Best practices for resolving onlnsvc issues

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

onlnsvc.exe [all]