What is Atomic.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 Atomic.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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Atomic.exe file information

The process belongs to software Atomic Clock Sync by Chaos Software Group (

Description: Atomic.exe is not essential for the Windows OS and causes relatively few problems. Atomic.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 524,288 bytes (50% of all occurrences), 74,768 bytes or 289,792 bytes. 
There is an icon for this program on the taskbar next to the clock. There is no description of the program. The application can be uninstalled in the Control Panel. It is not a Windows core file. Atomic.exe is able to record keyboard and mouse inputs and monitor applications. Therefore the technical security rating is 27% dangerous; however you should also read the user reviews.

Uninstalling this variant: You have the option to uninstall the software Atomic Clock Sync using the Uninstall a Program function of Windows Control Panel (Windows: Start, Settings, Control Panel, Uninstall a Program).

Recommended: Identify Atomic.exe related errors

External information from Paul Collins:

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

The program which I have that has a name for Atomic.exe is an atomic clock program, harmless, unless you have another program under this name..... then noone knows, but in my case its safe
This program will connect to one of the time servers operated by the National Institute of Standards and Technology (NIST) in the United States, and will compare the time of your computer with the time on the servers operated by the NIST.
  Christian Roberts   (further information) provides the worlds most accurate and complete list of local times, each location is precisely adjusted for their individual daylight savings time rules.
  Bill   (further information)
I beleive it has to do with the Atomic Clock Sync program to keep your computer's clock correct.
  Patty   (further information)
Atomic Clock internet time setting program
I use it on my limited fm radio station, I rebroadcast 3abn for my town, it has time sounds for station breaks, I use it to slow the broadcast for 3 1/2 seconds to allow their identification then I come in with mine, it is an automated system I run. you have to buy a key for it I think its 9 dollars or so . 11/25/2014

Rating chart

Summary: Average user rating of Atomic.exe: based on 6 votes with 6 user comments. 4 users think Atomic.exe is essential for Windows or an installed application. One user thinks it's probably harmless. One user thinks it's neither essential nor dangerous.

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Best practices for resolving Atomic issues

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

Atomic.exe [all]