How to remove the rk virus

Most antivirus programs identify rk.exe as malware—for instance Kaspersky identifies it as Backdoor.Win32.Delf.zvg, and BitDefender identifies it as Backdoor.Agent.AAZJ.

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 rk.exe malware

Rk.exe file information

The process known as RelevantKnowledge appears to belong to software RelevantKnowledge by RelevantKnowledge (

Description: Rk.exe is not essential for Windows and will often cause problems. The file rk.exe is located in the C:\Windows\System32 folder. The file size on Windows 10/8/7/XP is 991,232 bytes. 
The file is not a Windows core file. It is located in the Windows folder, but it is not a Windows core file. The program is not visible. The program starts when Windows starts (see Registry key: MACHINE\Run, RunOnce, Run). The software listens for or sends data on open ports to a LAN or the Internet. Rk.exe is able to record keyboard and mouse inputs and monitor applications. Therefore the technical security rating is 76% dangerous, however you should also read the user reviews.

Recommended: Identify rk.exe related errors

If rk.exe is located in a subfolder of C:\, the security rating is 92% dangerous. The file size is 779,776 bytes. There is no file information. The program is not visible. The application starts when Windows starts (see Registry key: MACHINE\Run, RunOnce, Run). The program listens for or sends data on open ports to a LAN or the Internet. It is not a Windows core file. Rk.exe is able to connect to the Internet and record keyboard and mouse inputs.

External information from Paul Collins:

Important: You should check the rk.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 process is not allowed to install or uninstall any software in your system.
i detect that it's load for "", I had see this with "Tcpview.exe".
  moiroux   (further information)
That windows always is running it and therefore you can't get rid of it even with anti spy
It monitors your internet access. You should also see an icon in the tray
It is spyware/adware. Go to and look at their list of clients, and you'll know how it managed to attach itself to your PC - AOL, MSN, Pepsi, Nestle's, just a whole bunch of big-name corporations are clients of theirs. It took me forever to find out that MarketScore and RelevantKnowledge are actually Comscore.
  Sophia   (further information)
I have removed it from my system 2K and have not had any problems.
Relevant Knowledge is spyware on your computer that reports to marketing companies for targeted advertising. I had this removed with Super Ad Blocker (free) but it apparently found it's way back on to my computer. Either that, or it never was completely removed. It is dangerous only in the sense that it builds up spyware on your computer.
I agree with u moiroux, i have the tht problem as well....also i find it odd tht i have multiple instances of explorer both claim to be from c:windows\explorer
All I know is that it displayed a dialogue box requesting internet access and I could not close it. Message read that the application had control of my computer. I went to "add/remove" and was able to remove RK and the box went away. I did not like that at all.
  Dennis M. Fishbeck  
This is a file annoying as this may be a virus

Rating chart

Summary: Average user rating of rk.exe: based on 13 votes with 10 user comments. One user thinks rk.exe is essential for Windows or an installed application. One user thinks it's neither essential nor dangerous. 3 users suspect danger. 8 users think rk.exe is dangerous and recommend removing it. One user is not sure about it.

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Best practices for resolving rk issues

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

rk.exe [all]