What is ptc_d.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 ptc_d.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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Ptc_d.exe file information

Windows Task Manager with ptc_d
Ptc_d.exe process in Windows Task Manager

The process known as PTC L-03 licensing daemon belongs to software PTC License Server Release or PTC FLEXnet Admin License Server Release by PTC.

Description: Ptc_d.exe is not essential for the Windows OS and causes relatively few problems. The ptc_d.exe file is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 1,527,808 bytes (22% of all occurrences), 716,800 bytes and 5 more variants. 
There is no information about the author of the file. The program is not visible. The ptc_d.exe file is not a Windows system file. The application uses ports to connect to or from a LAN or the Internet. Ptc_d.exe is able to monitor applications and manipulate other programs. Therefore the technical security rating is 68% dangerous, however you should also read the user reviews.

Uninstalling this variant: The software vendor offers the option to visit the vendor’s support site, make sure that you have installed the latest version or completely remove PTC FLEXnet Admin License Server Release or PTC License Server Release (Control Panel ⇒ Uninstall a Program).

Recommended: Identify ptc_d.exe related errors

Important: Some malware camouflages itself as ptc_d.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the ptc_d.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 a cad package for engineering users
  Mike Windsor  
This program is related to the FlexLM licensing for CAD package, ProEngineer. It is essential for the running of the ProE license server.
  Edward Carman   (further information)
I got this process running after installing Pro Engineer Wildfire 3.0 downloaded from a torent file. PTC is the creator of the ProE software. Installation was not successful and I un-installed it. This process cannot be killed in Win Task Manager (it re-appears immediately).
Part of the CPUID program package
PTC is the Pro/Engineer company. It has something to do with their Licensing package.
This is a license system by LMTOOLS for pro ENGINEER
  Craig Milton   (further information)

Summary: Average user rating of ptc_d.exe: based on 5 votes with 6 user comments. 5 users think ptc_d.exe is essential for Windows or an installed application. One user is not sure about it.

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Best practices for resolving ptc_d issues

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

ptc_d.exe [all]