What is MailRuUpdater.exe?

The genuine MailRuUpdater.exe file is a software component of Mail.Ru Software Updater by Mail.Ru Group.
"MailRuUpdater.exe" is supposed to be the 32-bit automatic background Windows service from which looks for updates to software and downloads them according to an internal schedule. There is disagreement as to its normal location: either a subfolder of the user's profile folder, ("C:\Users\%USER%\Appdata\Local\Mail.Ru\MailRuUpdater.exe") or a subfolder of "C:\Program Files", ("C:\Program Files\Mail.Ru\MailRuUpdater\MailRuUpdater.exe"). Multiple antivirus reports by OrangeDefender and Lavasoft disagree on whether an uninstaller exists for use in the Control Panel. At least 59 variants ranging from 589Kb to 10MB exist, of which multiple Lavasoft reports show 20% are created by different versions of "SpyTool.Win32.ARDAMAX_..." for protection of malware. Mail.Ru Group, controlled by Russian billionaire Alisher Usmanov, owns numerous websites, online games, and e-mail services and is overall the largest company in audience and screen time on the Russian language Internet, reaching 86% of Russian-speaking users worldwide.

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 MailRuUpdater.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.

Click to Run a Free Scan for MailRuUpdater.exe related errors

MailRuUpdater.exe file information

Windows Task Manager with MailRuUpdater
MailRuUpdater.exe process in Windows Task Manager

The process known as Mail.Ru updater belongs to software MailRuUpdater or by Mail.Ru (

Description: MailRuUpdater.exe is not essential for Windows and will often cause problems. MailRuUpdater.exe is located in a subfolder of the user's profile folder—for example C:\Users\USERNAME\AppData\Local\Mail.Ru\ or C:\Users\USERNAME\Local Settings\Application Data\Mail.Ru\. Known file sizes on Windows 10/8/7/XP are 4,157,656 bytes (8% of all occurrences), 5,873,880 bytes and 77 more variants. 
The MailRuUpdater.exe file is not a Windows core file. The MailRuUpdater.exe file is certified by a trustworthy company. The software starts upon Windows startup (see Registry key: Run, TaskScheduler, DEFAULT\Run, MACHINE\Run, MACHINE\User Shell Folders). The program has no visible window. MailRuUpdater.exe is able to monitor applications and record keyboard and mouse inputs. Therefore the technical security rating is 65% dangerous, but you should also take into account the user reviews.

Uninstalling this variant: If you encounter difficulties with MailRuUpdater.exe, you may also do the following:

Recommended: Identify MailRuUpdater.exe related errors

Important: Some malware also uses the file name MailRuUpdater.exe, for example Artemis!6749D8E8DA5C (detected by McAfee), and PUA_InsallAd (detected by TrendMicro). Therefore, you should check the MailRuUpdater.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

Definitely adware! Remove if possible.
Takes over browsers and pops up Russian advertisement websites.
Takes over browsers and pops up Russian advertisement websites.
It have a virus, trojan horse
Opens russian advertisements and has a keylogger to steal your passwords

Rating chart

Summary: Average user rating of MailRuUpdater.exe: based on 11 votes with 6 user comments. One user suspects danger. 10 users think MailRuUpdater.exe is dangerous and recommend removing it. One user is not sure about it.

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Best practices for resolving MailRuUpdater issues

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

MailRuUpdater.exe [all]