What is PSUNMain.exe?

The genuine PSUNMain.exe file is a software component of Panda Cloud Antivirus by Panda Security, S.L.
The network protection application for Panda Cloud Antivirus, this program runs as a background process and starts with Windows. It monitors incoming network connections and potentially malicious internet traffic. Any potentially harmful packets are isolated and blocked, and the user is notified. Panda Security was founded as Panda Software in 1990. Based in Spain, Panda provides internet security, antivirus, and antimalware software.

PSUNMain stands for Panda Security Unified Network Main Application

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 PSUNMain.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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PSUNMain.exe file information

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

The process known as Panda Cloud Antivirus belongs to software Panda Cloud Antivirus by Panda Security, S.L (

Description: PSUNMain.exe is not essential for the Windows OS and causes relatively few problems. PSUNMain.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 423,232 bytes (50% of all occurrences), 361,728 bytes or 406,848 bytes. 
The software can be removed using the Control Panel's Add\Remove programs applet. The program is not visible. The PSUNMain.exe file is a Verisign signed file. The file is digitally signed. The software starts upon Windows startup (see Registry key: MACHINE\Run). The file is not a Windows core file. Therefore the technical security rating is 16% dangerous, however you should also read the user reviews.

Uninstalling this variant: In case of problems with PSUNMain.exe, you could also do the following:

Recommended: Identify PSUNMain.exe related errors

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

Panda Cloud Antivirus

Summary: Average user rating of PSUNMain.exe: based on 1 vote with 1 user comment. One user thinks PSUNMain.exe is essential for Windows or an installed application.

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Best practices for resolving PSUNMain issues

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

PSUNMain.exe [all]