How to remove the LookThisUp virus

Most antivirus programs identify LookThisUp.exe as malware—e.g. Symantec identifies it as Adware.Gen or Infostealer.Limitail, and F-Secure identifies it as Adware.Agent.OMN.

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.

Click to Run a Free Virus Scan for the LookThisUp.exe malware

LookThisUp.exe file information

The process known as LookThisUp belongs to software LookThisUp by LookThisUp.

Description: LookThisUp.exe is not essential for Windows and will often cause problems. LookThisUp.exe is located in a subfolder of the user's profile folder. Known file sizes on Windows 10/8/7/XP are 1,848,976 bytes (80% of all occurrences) or 1,848,712 bytes. 
The program has no visible window. The LookThisUp.exe file is certified by a trustworthy company. The program starts when Windows starts (see Registry key: Run). LookThisUp.exe is not a Windows system file. The application listens for or sends data on open ports to a LAN or the Internet. Therefore the technical security rating is 58% dangerous.

Uninstalling this variant: You can uninstall LookThisUp, or ask Support team for help. Go to LookThisUp in the Windows Control Panel (Software or Programs section) to uninstall it, or go to for Customer Support.

Recommended: Identify LookThisUp.exe related errors

Important: You should check the LookThisUp.exe process on your PC to see if it is a threat. If LookThisUp has changed your browser's search engine and start page, you can recover your browser's default settings as follows:

Reset default browser settings for Internet-Explorer ▾
  1. In Internet Explorer, press the key combination Alt + X to open the Tools menu.
  2. Click Internet options.
  3. Click the Advanced tab.
  4. Click the Reset... button.
  5. Enable the Delete personal settings option.
This will reset your Internet Explorer to its default settings. Your browser will start with the familiar start page and search engine—without popups, ads, cookies, but all browser add-ons are deleted too [1]. Make cleaning up your browser and your computer simpler and safer with Security Task Manager.


User Comments

There are no user opinions yet. Why not be the first to write a short comment?

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

Best practices for resolving LookThisUp issues

The following programs have also been shown useful for a deeper analysis: ASecurity Task Manager examines the active LookThisUp process on your computer and clearly tells you what it is doing. Malwarebytes' well-known Banti-malware tool tells you if the LookThisUp.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 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.

Other processes

LookThisUp.exe [all]