What is ARO.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 ARO.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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ARO.exe file information

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

The process known as Advanced Registry Optimizer (version 2010) or ARO 2011 or ARO 2012 belongs to software Advanced Registry Optimizer or ARO 2011 or ARO 2012 by ( or Sammsoft (

Description: ARO.exe is not essential for Windows and will often cause problems. The ARO.exe file is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 2,553,752 bytes (17% of all occurrences), 2,312,048 bytes and 9 more variants. 
The program has a visible window. The process starts upon Windows startup (see Registry key: Run, DEFAULT\Run, User Shell Folders). ARO.exe is not a Windows core file. ARO.exe is a Verisign signed file. The ARO.exe file is certified by a trustworthy company. ARO.exe is able to record keyboard and mouse inputs and monitor applications. Therefore the technical security rating is 7% dangerous, however you should also read the user reviews.

Uninstalling this variant: The software vendor offers the option to turn to the software developer [1][2], Sammsoft, for advice or uninstall the software ARO 2011 or Advanced Registry Optimizer using the Uninstall a Program function of Windows Control Panel (Windows: Start, Settings, Control Panel, Uninstall a Program).

Recommended: Identify ARO.exe related errors

Important: Some malware camouflages itself as ARO.exe. Therefore, you should check the ARO.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

That it won't let me uninstall it.
  Patty Bradford  
I think it is a virus because I have this program try to get onto my computer like five time in my computing history, and each time I have to use ccleaner to get it out... If your having trouble with this problem, the only way I can help it get onto safe mode (press and hold the f8 key when restarting your computer, and navigate into the safe mode option). Then go into ccleaner and go to remove files, and push aro. Or right click on the aro icon and push go to program folder where you can delete it from there.
  Richard M.  
I think it might be s trojan horse
ARO 2011 is a cleaner and works well on windons 7 and 8. After i instaled windows 10 is messes up with windows 10 start manu so you probly need to remove it.

Summary: Average user rating of ARO.exe: based on 4 votes with 4 user comments. One user thinks it's neither essential nor dangerous. One user suspects danger. 2 users think ARO.exe is dangerous and recommend removing it.

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Best practices for resolving ARO issues

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

To help you analyze the ARO.exe process on your computer, the following programs have proven to be helpful: Security 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. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

ARO.exe [all]