What is PSIService.exe?

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 PSIService.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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PSIService.exe file information

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

The process known as nTitles PSIService

belongs to software ProtexisLicensing or Corel Paint Shop Pro Photo (version X2) or Corel Painter X or Corel Paint Shop Pro Photo XI or Corel Painter Essentials (version 3, 4) or WordPerfect Office (version X3) or CorelDRAW Graphics Suite (version X3) or Corel Snapfire Plus or Corel MediaOne

by Protexis ( or Corel (

Description: PSIService.exe is not essential for Windows and will often cause problems. The file PSIService.exe is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 174,656 bytes (74% of all occurrences), 177,704 bytes and 4 more variants. 
The program is not visible. PSIService.exe is not a Windows core file. It is certified by a trustworthy company. PSIService.exe is able to record keyboard and mouse inputs. Therefore the technical security rating is 37% dangerous; however you should also read the user reviews.

Uninstalling this variant: If you run into problems with PSIService.exe, you can also go to the support area of the Corel website, find out if there is a newer version available or remove the entire program Corel Paint Shop Pro Photo XI or Corel Paint Shop Pro Photo X2 using Windows Control Panel.

Recommended: Identify PSIService.exe related errors

Important: Some malware camouflages itself as PSIService.exe, for example PTCH_KATUSHA.W (detected by TrendMicro), and (detected by Kaspersky). Therefore, you should check the PSIService.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

Win7 : c:\Program Files (x86)\Common Files\Protexis\License Service\PsiService_2.exe Size:193.824 c:\Program Files (x86)\Common Files\Protexis\License Service\PSIKey_2.dll Size: 1.484.064
Installed with Corel software as part of their anti-piracy scheme. I don't object, but with they would have put it in a directory with the Corel name so it was clear. I'll look to make certain it isn't left behind if I should have the need (or desire) to uninstall WordPerfect X6 suite. System Mechanic located it on a normal scan and asked if I wanted to turn it off.
Just uninstalled Corel PSP and the files were disabled and removed. Also disabled the files first and found the only difference was when you closed psp it poped up a window with advertising in it. Re enabled it and the advertising went away.
everytime I kill it I get a popup from windows saying it encountered a critical error and it will shut down :
after an enormous researching i concluded that it's not harmfull... it just use a portion of PC memory... it's belongs to Corel Co. as antipiracy software.. that's it... if we disable it, Corel doesn't load and shows (error 38) and we can't even resintall or unisntall Corel... leave it or crack it... that's all folks !! ;-)
Corel PaintShop Pro X5
  Alex   (further information)
This file is on when my Windows safety mode is active, it is goes off when Windows is turned to its normal state. It is a spy. I have not on my computer COREL software or related to it. I did not ask for it. When my Windows is in normal mode, I can not see this protexis file, it appears only, when my Windows is in safe mode in the Program Files
mine came with corel windvd
More comments can be found here:
    (further information)

Rating chart

Summary: Average user rating of PSIService.exe: based on 50 votes with 9 reviews. 19 users think PSIService.exe is essential for Windows or an installed application. 7 users think it's probably harmless. 15 users think it's neither essential nor dangerous. 7 users suspect danger. 2 users think PSIService.exe is dangerous and recommend removing it. 12 users don't grade PSIService.exe ("not sure about it").

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Best practices for resolving PSIService issues

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

PSIService.exe [all]