What is PsnLite.exe?

The genuine PsnLite.exe file is a software component of Post-it® Software Notes Lite by
PsnLite.exe is an executable file that runs Post-it Software Notes Lite, a digital sticky note application. This is not a critical Windows component and should be removed if known to cause problems. Post-it Software Notes Lite is a freeware program designed for the Windows platform. The program is a simple utility that attaches notes to the desktop, mimicking 3M's physical Post-it notes. An infinite amount of notes may be created and the note's font can be changed. The notes also feature an alarm function. 3M is an American company that produces and sells more than 55,000 different types of products intended for industrial, medical, as well as personal use. The company was founded as a mining venture by John Dwan in 1902 and originally known as the Minnesota Mining and Manufacturing Company. Today it a multinational conglomerate that sells products in over 200 countries worldwide. The company rakes in over $33 billion annually in revenue.

PSNLite stands for Post-it® Software Notes Lite Launcher

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 PsnLite.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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PsnLite.exe file information

The process known as Post-it® Software Notes: System belongs to software Post-it® Software Notes Lite by 3M (

Description: PsnLite.exe is not essential for Windows and will often cause problems. PsnLite.exe is located in a subfolder of "C:\Program Files"—mainly C:\Program Files\3M\PSNLite\. Known file sizes on Windows 10/8/7/XP are 2,080,768 bytes (66% of all occurrences) or 1,622,016 bytes. 
The program has a visible window. There is no file information. The process starts upon Windows startup (see Registry key: MACHINE\User Shell Folders). It is not a Windows core file. Therefore the technical security rating is 26% dangerous, however you should also read the user reviews.

Uninstalling this variant: You may also uninstall the software Post-it® Software Notes Lite using the Uninstall a Program function of Windows Control Panel (Windows: Start, Settings, Control Panel, Uninstall a Program).

Recommended: Identify PsnLite.exe related errors

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

psnlite.exe is a process which belongs to the Post-it Software Notes which enables you to organize lists and projects on your desktop.

Summary: Average user rating of PsnLite.exe: based on 1 vote with 1 user comment. One user thinks it's neither essential nor dangerous.

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Best practices for resolving PsnLite issues

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

PsnLite.exe [all]