What is psi.exe?

The genuine psi.exe file is a software component of Secunia PSI by Secunia.
Typically used alongside a more robust antivirus or internet security tool, Secunia PSI is a personal security tool that focuses on non-Microsoft software. PSI is free for download from the Secunia wibsite, and routinely updates definitions. PSI monitors software installed on your machine and identifies potential security flaws. It then establishes patches or fixes and installs them for you. The update process can be automated through the PSI console in order to minimize the necessary user interaction with the program.

PSI stands for Personal Software Inspector

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 psi.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.

Click to Run a Free Scan for psi.exe related errors

Psi.exe file information

Windows Task Manager with psi
Psi.exe process in Windows Task Manager

The process known as Secunia PSI belongs to software Secunia PSI by Secunia (

Description: Psi.exe is not essential for the Windows OS and causes relatively few problems. Psi.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 900,816 bytes (22% of all occurrences), 626,688 bytes and 9 more variants. 
There is an icon for this program on the taskbar next to the clock. The file is not a Windows system file. The software uses ports to connect to or from a LAN or the Internet. It is digitally signed. Psi.exe is able to record keyboard and mouse inputs and monitor applications. Therefore the technical security rating is 25% dangerous, however you should also read the user reviews.

Uninstalling this variant: You have the option to uninstall Secunia PSI software via Windows Control Panel/Add or Remove Programs (Windows XP) or Programs and Features (Windows 10/8/7).

Recommended: Identify psi.exe related errors

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

Psi, The BEST Jabber client :P
  KDE   (further information)
Can also be Secunia's Personal Software Inspector.
  Juan Carlos Perez   (further information)
Only that is listed as a Process on my Task Manager and uses 12,592k
  Barbara Breger  
Ich benutze Scunia PSI eine ganze Weile ohne Probleme. Sollte es Nachweise geben, die abweichen von menem Urteil sollten zwei Dinge geschehen. 1. Den Hersteller informieren (dies wäre seriös!) und mir die gleiche E-Mail bitte zusenden. Thomas Klein (Prüfingenieur)
  Thomas Klein  
part of the Secunia program
My psi.exe 891 kB is the free Secunia Personal Software Inspector and is useful for better security
  Clive Burton   (further information)

Rating chart

Summary: Average user rating of psi.exe: based on 7 votes with 7 user comments. 4 users think psi.exe is essential for Windows or an installed application. One user thinks it's probably harmless. 2 users think it's neither essential nor dangerous. 2 users don't grade psi.exe ("not sure about it").

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Best practices for resolving psi issues

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

psi.exe [all]