What is antirun.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 antirun.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 antirun.exe related errors

Antirun.exe file information

Windows Task Manager with antirun
Antirun.exe process in Windows Task Manager

The process known as Antirun belongs to software Antirun (version 2.5.b.5) by unknown.

Description: Antirun.exe is not essential for the Windows OS and causes relatively few problems. Antirun.exe is located in a subfolder of "C:\Program Files" or sometimes in a subfolder of C:\. Known file sizes on Windows 10/8/7/XP are 2,521,600 bytes (35% of all occurrences), 641,024 bytes and 4 more variants. 
There is no description of the program. The file is not a Windows system file. The program is not visible. The process starts upon Windows startup (see Registry key: MACHINE\Run). Antirun.exe is able to record keyboard and mouse inputs. Therefore the technical security rating is 56% dangerous.

Uninstalling this variant: If you run into problems with antirun.exe, you may also do the following:
  • look for help on the website
  • uninstall Antirun or Antirun 2.5.b.5 software via Windows Control Panel/Add or Remove Programs (Windows XP) or Programs and Features (Windows 10/8/7)

Recommended: Identify antirun.exe related errors

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

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

antirun.exe [all]