How to remove the rdns virus

Most antivirus programs identify rdns.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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Rdns.exe file information

Windows Task Manager with rdns
Rdns.exe process in Windows Task Manager

The process appears to belong to software unknown by Guidance Software (

Description: Rdns.exe is not essential for Windows and will often cause problems. The file rdns.exe is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 794,624 bytes (66% of all occurrences) or 913,408 bytes. 
There is no information about the author of the file. The program is not visible. The application uses ports to connect to or from a LAN or the Internet. The rdns.exe file is not a Windows core file. Rdns.exe is able to hide itself and monitor applications. Therefore the technical security rating is 70% dangerous.

Recommended: Identify rdns.exe related errors

Important: You should check the rdns.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.


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Best practices for resolving rdns issues

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

rdns.exe [all]