What is AstSrv.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 AstSrv.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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AstSrv.exe file information

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

The process known as Nalpeiron Highend Service or A.S.T Highend Service belongs to software Nalpeiron License Management or A.S.T Copy Protection by Nalpeiron ( or Advanced Software Technologies.

Description: AstSrv.exe is not essential for the Windows OS and causes relatively few problems. AstSrv.exe is located in the C:\Windows\System32 folder or sometimes in a subfolder of C:\Windows\System32. Known file sizes on Windows 10/8/7/XP are 57,344 bytes (89% of all occurrences), 53,248 bytes and 5 more variants. 
The program is not visible. AstSrv.exe is not a Windows core file. The AstSrv.exe file is an unknown file in the Windows folder. Therefore the technical security rating is 50% dangerous, however you should also read the user reviews.

Recommended: Identify AstSrv.exe related errors

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

Software licensing service for Alien Skin Adobe Photoshop plugins, needed for on-line activation
  Dogmeat   (further information)
Activation licensing scheme used in some new plugins such as AlienSkin products Bokeh / Blow Up 2.0+ . Is necessary for these plugins to function correctly.
  Alex L.   (further information)
ASTSRV.EXE installs with a Photoshop plug in named AlienSkin-Bokeh. The service can be enabled/disabled in the XP Controll Pan.
  Fred H   (further information)
The digital signature under its properties says its from Nitro PDF
It belongs to the Nalpeiron Licensing Service
Part of the Nitro PDF Professional 6 installation package.
  Pmiddy   (further information)
It is NOT dangerous at all, it's a licensing component for software
  Jon Gillespie-Brown   (further information)
Needed for Photoshop Plugins
  Phillip Meister  
Part of Nalpeiron Licensing Service - no danger at all
You need it for Visual Link Spanish to work so do not disable the service or you won't be able to run the program.
Installed with MetaStock
Installed as part of Goverlan v6
Mine is for OnOne Plug-ins for Photoshop, and is Nalpeiron Licensing Service, called AST in Windows XP services, and should be enabled for those Plug-ins to work.
Nalpeiron Licensing Service
It is installed with many products for copyright protection purpose, for example Metastock, Nitro PDF Pro etc... If removed or disable, these software will fail to run or request a original installation disk to reinstate the licensing service.

Rating chart

Summary: Average user rating of AstSrv.exe: based on 15 votes with 15 user comments. 7 users think AstSrv.exe is essential for Windows or an installed application. 2 users think it's probably harmless. 5 users think it's neither essential nor dangerous. One user thinks AstSrv.exe is dangerous and recommends removing it. 3 users don't grade AstSrv.exe ("not sure about it").

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Best practices for resolving AstSrv issues

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

AstSrv.exe [all]