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What does the psi.exe file do?

The psi.exe process is also known as Secunia PSI and is a part of Secunia PSI. This software is produced by Secunia (www.secunia.com). An obsolete or defective version of psi.exe can cause problems for your computer that can range from slowness to error messages such as these:

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What you should know about psi.exe Secunia PSI

psi.exe is not part of Windows, but it is important nonetheless. Psi.exe is found in a subdirectory of "C:\Program Files". Frequently occurring are file sizes such as 663,552 bytes (25% of all these files), 748,840 bytes as well as 4 other variants.
The program appears as a small tray icon. You will find it on the Windows taskbar next to the clock. If you don't see the tray icon, click the white (<) symbol. Psi.exe does not come from Microsoft and is not part of the operating system. This psi program is receiving or sending data on the LAN (your local network) or on the Internet. The producer of the file is registered with a certificate authority. This confirms the genuineness of the file. Psi.exe is capable of log keyboard entries as well as track other applications. For this reason, 37% of all experts consider this file to be a possible threat. The probability that it can cause harm is high.

If you see this file on your hard drive or in Windows Task Manager, please make sure that it is not a malicious variant. It's a fact that many trojans try to cloak their true identity by calling themselves psi.exe. With the above information or by using tools like Security Task Manager you can determine if, in your case, the file is an undesirable variant.

What do other computer users say about psi?

Psi, The BEST Jabber client :P
Can also be Secunia's Personal Software Inspector. (further information...)
Juan Carlos Perez
Only that is listed as a Process on my Task Manager and uses 12,592k
Barbara Breger
part of the Secunia program
My psi.exe 891 kB is the free Secunia Personal Software Inspector and is useful for better security (further information...)
Clive Burton

Summary: 3 users judge psi.exe to be an essential file that should not be touched. source: file.net

How to uninstall Secunia PSI

psi.exe Secunia PSI fix

To remove Secunia PSI from your computer, please follow the manual instructions below or use an automatic uninstaller product.

  1. Click the Windows Start Button. In Windows 8, look for Control Panel.
  2. Click Control Panel.
  3. Click Uninstall a program.
  4. Look for Secunia PSI in the list of available programs.
  5. Click Uninstall.

How to tell if psi.exe (Secunia PSI) was uninstalled cleanly

After uninstalling, restart your computer. Then start Windows Explorer and see if there is still a folder with the name of the software under C:\Program Files. Be sure to check the Registry as well for remnants of Secunia PSI. To do this, start "Regedit", then look under "HKEY_LOCAL_MACHINE" > "Software" for Secunia PSI or the name of the producer. Always keep in mind that only a computer professional should ever directly delete entries in the Windows Registry.

What to do if a program does not uninstall

The easiest way to remove any kind of software cleanly and accurately is to use an uninstaller tool. Because the uninstaller automatically creates a backup, there is no risk of anything going wrong.

Last but not least

If Windows not working quite right for you, or if startup is taking a long time, or psi.exe is causing problems for you, a good Windows diagnostic tool may very well help. This is especially effective when it comes to older computers that have accumulated vast quantities of "garbage data" as the result of many software installs and uninstalls.

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