How to remove the opnsqr virus

Most antivirus programs identify opnsqr.exe as malware.

The free file information forum can help you find out how to remove it. If you have additional information about this file, please leave a comment or a suggestion for other users.

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Opnsqr.exe file information

The process known as OpinionSquare appears to belong to software OpinionSquare by OpinionSquare ( or TMRG (

Description: Opnsqr.exe is not essential for Windows and will often cause problems. Opnsqr.exe is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 1,576,960 bytes (20% of all occurrences), 1,368,064 bytes, 1,622,016 bytes, 1,478,656 bytes or 1,441,792 bytes. 
The program is not visible. Opnsqr.exe is located in the Windows folder, but it is not a Windows core file. The opnsqr.exe file is not a Windows system file. The process listens for or sends data on open ports to a LAN or the Internet. The program starts upon Windows startup (see Registry key: MACHINE\Run). Opnsqr.exe is able to record keyboard and mouse inputs, monitor applications and manipulate other programs. Therefore the technical security rating is 74% dangerous, however you should also read the user reviews.

Recommended: Identify opnsqr.exe related errors

If opnsqr.exe is located in a subfolder of "C:\Program Files", the security rating is 66% dangerous. The file size is 1,659,392 bytes. The program is not visible. The program is loaded during the Windows boot process (see Registry key: MACHINE\Run). It is not a Windows system file. The software listens for or sends data on open ports to a LAN or the Internet. Opnsqr.exe is able to record keyboard and mouse inputs, monitor applications and manipulate other programs.

Uninstalling this variant: In case of problems with opnsqr.exe, you can uninstall the program using the Control Panel ⇒ Uninstall a ProgramOpinionSquare.

Important: You should check the opnsqr.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, research(survey)outfit,
  benboise   (further information)
it runs on my computer and doesnt stop for 10 minutes
  Gary Parker  
installs in Firefox as a plugin, runs silent, hard to eliminate
it signify opinion square it's "normally" a paid for observer like some opinion panels
It locks up my entire system and has moved into other ares of my computer
  Sharon   (further information)
It loaded itself onto my computer when I went to Opinion Square survey site and slows down my internet connection and blocks activity
made and Opinion Square survey and can't get rid of it... mem usage increases when I start browsing the net

Rating chart

Summary: Average user rating of opnsqr.exe: based on 6 votes with 7 user comments. 2 users think it's neither essential nor dangerous. 4 users think opnsqr.exe is dangerous and recommend removing it. One user is not sure about it.

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Best practices for resolving opnsqr issues

The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active opnsqr process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the opnsqr.exe on your computer displays annoying ads, slowing it down. This type of unwanted adware program is not considered by some antivirus software to be a virus and is therefore not marked for cleanup.

A clean and tidy computer is the key requirement for avoiding PC trouble. 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.

Other processes

opnsqr.exe [all]