What is nltdi?

Nltdi.sys is a Windows driver. A driver is a small software program that allows your computer to communicate with hardware or connected devices. This means that a driver has direct access to the internals of the operating system, hardware etc. The free file information forum can help you determine if nltdi.sys is a Windows system file or if it belongs to an application that you can trust.

Run a free scan to check for nltdi drivers in need of updating

Nltdi.sys file information

The process known as NetLimiter Driver belongs to software NetLimiter (version 2) or Locktime Software s.r.o by Locktime Software (

Description: Nltdi.sys is not essential for the Windows OS and causes relatively few problems. The nltdi.sys file is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 82,200 bytes (50% of all occurrences), 149,760 bytes or 81,688 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program is not visible. There is no detailed description of this service. It is not a Windows core file. The nltdi.sys file is digitally signed. nltdi.sys appears to be a compressed file. Therefore the technical security rating is 35% dangerous, however you should also read the user reviews.

Recommended: Identify nltdi.sys related errors

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

internet traffic control and monitoring tool
  Scott Larsen   (further information)
Integral to NetLimiter by Locktime Software. Bandwidth monitoring and shaping tool. Includes basic firewall application in 2.x.
  Valentijn de Pagter   (further information)
netlimiter driver /internet traffic control and monitoring tool
  Jonvesi   (further information)

Summary: Average user rating of nltdi.sys: based on 3 votes with 3 user comments. 3 users think nltdi.sys is essential for Windows or an installed application.

Do you have additional information? Help other users!
What do you know about nltdi.sys:
How would you rate it:
Link for more info:
Your Name:

Best practices for resolving nltdi issues

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

nltdi.sys [all]