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 msnmsgr.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.
Description: Msnmsgr.exe is not essential for Windows and will often cause problems. The file msnmsgr.exe is located in a subfolder of "C:\Program Files (x86)" (usually C:\Program Files (x86)\Windows Live\Messenger\).
Known file sizes on Windows 10/8/7/XP are 3,872,080 bytes (46% of all occurrences), 4,280,184 bytes and 12 more variants.
It is not a Windows system file. You can uninstall this program in the Control Panel. The file has a digital signature. The program is loaded during the Windows boot process (see Registry key: Run, DEFAULT\Run, MACHINE\Run, RunOnce). Msnmsgr.exe is able to record keyboard and mouse inputs and monitor applications. Therefore the technical security rating is 22% dangerous; however you should also read the user reviews.
Recommended: Identify msnmsgr.exe related errors
If msnmsgr.exe is located in a subfolder of C:\Windows\System32, the security rating is 52% dangerous. The file size is 5,001,216 bytes. The program has a visible window. The process starts when Windows starts (see Registry key: Run, DEFAULT\Run, MACHINE\Run, RunOnce). Msnmsgr.exe is not a Windows core file. Msnmsgr.exe is able to monitor applications.
External information from Paul Collins:
There are different files with the same name:
Important: Some malware camouflages itself as msnmsgr.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder, for example Win32:VBMod (detected by Avast), and Worm.Generic.241949 (detected by BitDefender). Therefore, you should check the msnmsgr.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.
A clean and tidy computer is the key requirement for avoiding problems with msnmsgr. 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 msnmsgr.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.