What is tlntsvr.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 tlntsvr.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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Tlntsvr.exe file information

Windows Task Manager with tlntsvr
Tlntsvr.exe process in Windows Task Manager

The process known as Telnet belongs to software Microsoft Windows Operating System by Microsoft (

Description: Tlntsvr.exe is an important part of Windows, but often causes problems. The file tlntsvr.exe is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 73,216 bytes (61% of all occurrences), 75,264 bytes and 5 more variants. 
The program has no visible window. The tlntsvr.exe file is a Microsoft signed file. The application listens for or sends data on open ports to a LAN or the Internet. Therefore the technical security rating is 22% dangerous, however you should also read the user reviews.

Recommended: Identify tlntsvr.exe related errors

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

Windows system Telnet server relay file.
This service, though lefit, is NOT something you want running on your Windows computer. It is a very insecure server.
  K   (further information)
Der Telnet-Server für Windows.
  Benedikt Wicklein  
it;s Windows process, but can be used by hackers
it is telnet server main executable
Nothing, but I deleted it via Regedit after Avira highlighted it for the first time as hidden. No problems so far. Can gain access to internet, use browsers.

Rating chart

Summary: Average user rating of tlntsvr.exe: based on 10 votes with 6 user comments. 4 users think tlntsvr.exe is essential for Windows or an installed application. 2 users think it's neither essential nor dangerous. 2 users suspect danger. 2 users think tlntsvr.exe is dangerous and recommend removing it. One user is not sure about it.

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Best practices for resolving tlntsvr issues

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

tlntsvr.exe [all]