How to remove the opensite virus

Most antivirus programs identify opensite.exe as malware—for example Symantec identifies it as Adware.OpenSite, and Kaspersky identifies it as

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 opensite.exe malware

Opensite.exe file information

The process belongs to software Open Site by unknown.

Description: Opensite.exe is not essential for Windows and will often cause problems. Opensite.exe is located in a subfolder of "C:\Program Files"—common is C:\Program Files\Open Site\. The file size on Windows 10/8/7/XP is 135,168 bytes. 
Opensite.exe is a file with no information about its developer. The opensite.exe file is not a Windows core file. The program is not visible. Opensite.exe is able to monitor applications. Therefore the technical security rating is 56% dangerous.

Recommended: Identify opensite.exe related errors

Important: You should check the opensite.exe process on your PC to see if it is a threat. If Open Site 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.


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Best practices for resolving opensite issues

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

opensite.exe [all]