What is PLServ.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 PLServ.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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PLServ.exe file information

The process known as Privilege Server belongs to software Privilege Licenser by Aladdin Knowledge Systems (

Description: PLServ.exe is not essential for the Windows OS and causes relatively few problems. PLServ.exe is located in the C:\Windows\System32 folder. The file size on Windows 10/8/7/XP is 1,192,028 bytes. 
The program has no visible window. The file is an unknown file in the Windows folder. PLServ.exe is not a Windows core file. PLServ.exe is able to manipulate other programs. Therefore the technical security rating is 58% dangerous, however you should also read the user reviews.

Recommended: Identify PLServ.exe related errors

Important: Some malware disguises itself as PLServ.exe, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the PLServ.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

Part of Aladdins software license system. The product is called HASP SL
  Yoji   (further information)
Is it a real program or some sort of spyware
error message
Server used to control licences of the HASP usb keys

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

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Best practices for resolving PLServ issues

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

PLServ.exe [all]