What is J.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 J.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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J.exe file information

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

The process known as Rootkit detection utility belongs to software Sysinternals Rootkitrevealer by Microsoft (

Description: J.exe is not essential for Windows and will often cause problems. J.exe is located in a subfolder of the user's profile folder—e.g. C:\Users\USERNAME\AppData\Roaming\2 3\. The file size on Windows 10/8/7/XP is 139,264 bytes. 
There is no description of the program. The process starts upon Windows startup (see Registry key: User Shell Folders). The file is not a Windows system file. The program has a visible window. Therefore the technical security rating is 36% dangerous; but you should also compare this rating with the user reviews.

Recommended: Identify J.exe related errors

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

Appears to be installed temporarily by SysInternals Root Kit Revealer
  datatribe   (further information)

Summary: Average user rating of J.exe: based on 3 votes with 1 user comment. 2 users think it's neither essential nor dangerous. One user thinks J.exe is dangerous and recommends removing it.

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Best practices for resolving J issues

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

J.exe [all]