What is ATnotes.exe?

The genuine ATnotes.exe file is a software component of ATnotes by Thomas Ascher.
ATnotes.exe is an executable file that is responsible for running the ATnotes program, an application that provides sticky notes directly on the desktop. This file is not a critical Windows file and can be removed if known to create problems. ATnotes is a freeware tool that can create virtual sticky notes on the computer desktop. It runs from the system tray, works on low resources, and provides support for multiple languages. Notes can be organized by sorting them according to folders. Additional features include alarms, color and font customization and the ability to send notes by email. ATnotes was first released in 1999. ATnotes is developed and marketed by Thomas Ascher, a software programmer born in Innsbruck, Austria.

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 ATnotes.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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ATnotes.exe file information

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

The process known as ATnotes or Creates notes on the Windows desktop belongs to software ATnotes by Thomas Ascher (

Description: ATnotes.exe is not essential for the Windows OS and causes relatively few problems. The ATnotes.exe file is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 1,015,808 bytes (83% of all occurrences) or 1,007,616 bytes. 
There is an icon for this program on the taskbar next to the clock. The program has a visible window. You can uninstall this program in the Control Panel. The ATnotes.exe file is not a Windows system file. ATnotes.exe is able to connect to the Internet and record keyboard and mouse inputs. Therefore the technical security rating is 17% dangerous.

Uninstalling this variant: In case you experience problems using ATnotes.exe, you can also do the following:
  1) safely remove the program using the uninstall program of ATnotes (Control Panel ⇒ Uninstall a Program)
  2) visit the support page
  3) search for an update on the vendor’s website.

Recommended: Identify ATnotes.exe related errors

External information from Paul Collins:

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

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

ATnotes.exe [all]