What is lktsrv.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 lktsrv.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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Lktsrv.exe file information

Windows Task Manager with lktsrv
Lktsrv.exe process in Windows Task Manager

The process known as lktsrv or Part of Logos belongs to software National Instruments Logos or National Instruments Time Synchronization or NI Logos by National Instruments (

Description: Lktsrv.exe is not essential for Windows and will often cause problems. The lktsrv.exe file is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 57,344 bytes (25% of all occurrences), 53,248 bytes and 6 more variants. 
The program is not visible. The file is not a Windows core file. The software listens for or sends data on open ports to a LAN or the Internet. The software can be uninstalled in the Control Panel. Therefore the technical security rating is 43% dangerous, however you should also read the user reviews.

Uninstalling this variant: It is possible to completely remove lktsrv or NI Logos (Control Panel ⇒ Uninstall a Program) or use the software publisher's support.

Recommended: Identify lktsrv.exe related errors

If lktsrv.exe is located in a subfolder of C:\Windows, the security rating is 30% dangerous. The file size is 63,792 bytes (50% of all occurrences), 53,808 bytes or 50,736 bytes. The program is not visible. The file is a Verisign signed file. It is certified by a trustworthy company. Lktsrv.exe is not a Windows core file.

Uninstalling this variant: It is possible to completely remove lktsrv (Control Panel ⇒ Uninstall a Program) or use the software publisher's support.

Important: Some malware camouflages itself as lktsrv.exe. Therefore, you should check the lktsrv.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

Used in National Instruments Lab View
lktsrv.exe is part of National Instruments Logos, located in c:\WINDOWS\system32\lktsrv.exe
It ran 73% of my cpu and my fan was running in high speed. Killing it got my batterytime to go from 35min to 1h and 42minutes. Located in C:\Windows\SysWOW64 . Signed by national instruments.
  Carl Grubbström  

Summary: Average user rating of lktsrv.exe: based on 3 votes with 3 user comments. One user thinks it's probably harmless. One user thinks it's neither essential nor dangerous. One user thinks lktsrv.exe is dangerous and recommends removing it. One user is not sure about it.

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Best practices for resolving lktsrv issues

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

lktsrv.exe [all]