What is ATR1.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 ATR1.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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ATR1.exe file information

Windows Task Manager with ATR1
ATR1.exe process in Windows Task Manager

The process known as Atari Registration belongs to software PowerReg by Leader Technologies/Atari (

Description: ATR1.exe is not essential for the Windows OS and causes relatively few problems. ATR1.exe is located in a subfolder of "C:\Program Files". The file size on Windows 10/8/7/XP is 4,947,968 bytes. 
The program has a visible window. The software starts upon Windows startup (see Registry key: User Shell Folders). The file is not a Windows core file. ATR1.exe is able to record keyboard and mouse inputs. Therefore the technical security rating is 22% dangerous, however you should also read the user reviews.

Recommended: Identify ATR1.exe related errors

If ATR1.exe is located in a subfolder of the user's profile folder, the security rating is 22% dangerous. The file size is 11,128,832 bytes. The program has a visible window. The application is loaded during the Windows boot process (see Registry key: User Shell Folders). The file is not a Windows core file. ATR1.exe is able to record keyboard and mouse inputs.

Important: Some malware camouflages itself as ATR1.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the ATR1.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

Software registration
  Nolan Bushnell   (further information)
Atari Rollercoaster Tycoon 3 wild registration
  Dan Whalley  

Summary: Average user rating of ATR1.exe: based on 3 votes with 2 user comments. 2 users think ATR1.exe is essential for Windows or an installed application. One user thinks it's neither essential nor dangerous.

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Best practices for resolving ATR1 issues

A clean and tidy computer is the key requirement for avoiding problems with ATR1. 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 ATR1.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

ATR1.exe [all]