What is rnathchk.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the rnathchk.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

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Rnathchk.exe file information

The process known as RealNetworks ATH Check App belongs to software RealOne Player (version (32-bit)) by RealNetworks (

Description: Rnathchk.exe is not essential for Windows and will often cause problems. Rnathchk.exe is located in a subfolder of "C:\Program Files\Common Files"—e.g. C:\Program Files\Common Files\Real\Update_OB\. The file size on Windows 10/8/7/XP is 57,389 bytes. 
The program is not visible. Rnathchk.exe is not a Windows core file. Therefore the technical security rating is 42% dangerous; however you should also read the user reviews.

Recommended: Identify rnathchk.exe related errors

Important: Some malware camouflages itself as rnathchk.exe. Therefore, you should check the rnathchk.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 file is added to system32 folder in hidden usually attacks windows 2000.its file can only be viewd using 3rd party softwares such as "start up genie".it opens a large no of ports and establishes connection generally useing smtp establishes connection with many websites which u can see usin "netstat -a" command in command is started as an automatic service n can b removed from start up by using "start up genie".so it is not so dangerous once it is removed 4rm start up. u can delete it by usin another os like knoppix or by other os.
its RealPlayer, something to do with updates!

Summary: Average user rating of rnathchk.exe: based on 2 votes with 2 user comments. One user thinks it's neither essential nor dangerous. One user thinks rnathchk.exe is dangerous and recommends removing it.

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Best practices for resolving rnathchk issues

A clean and tidy computer is the key requirement for avoiding problems with rnathchk. 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.

To help you analyze the rnathchk.exe process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

rnathchk.exe [all]