What is sdaemon.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 sdaemon.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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Sdaemon.exe file information

Windows Task Manager with sdaemon
Sdaemon.exe process in Windows Task Manager

The process known as sdaemon or netlock belongs to software Tropical Software sdaemon by Tropical Software (

Description: Sdaemon.exe is not essential for Windows and will often cause problems. Sdaemon.exe is located in the C:\Windows folder. Known file sizes on Windows 10/8/7/XP are 111,104 bytes (66% of all occurrences), 96,256 bytes, 95,232 bytes, 45,056 bytes or 110,592 bytes. 
There is an icon for this program on the taskbar next to the clock. The sdaemon.exe file is not a Windows core file. The sdaemon.exe file is an unknown file in the Windows folder. It can change the behavior of other programs or manipulate other programs. The program starts when Windows starts (see Registry key: MACHINE\Run). Sdaemon.exe is able to hide itself. Therefore the technical security rating is 63% dangerous, however you should also read the user reviews.

Recommended: Identify sdaemon.exe related errors

External information from Paul Collins:

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

this program will be reboot the computer while login and denied registry
This file *should* be a product released by tropical software.
PC Security auto start
  Dobrin Georgiev   (further information)
it is tropical software. for their product PC Security i believe
I have done a search on all my local disks. I found that this file resides only in C:\Windows and in Prefetch folder(that can be removed). So I believe there is no harm in this. I also run PC Security in my PC
  Ustad Jerry le' Great  
its the pc security file....................

Rating chart

Summary: Average user rating of sdaemon.exe: based on 8 votes with 6 user comments. 4 users think sdaemon.exe is essential for Windows or an installed application. One user thinks it's probably harmless. One user thinks it's neither essential nor dangerous. One user suspects danger. One user thinks sdaemon.exe is dangerous and recommends removing it. 2 users don't grade sdaemon.exe ("not sure about it").

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Best practices for resolving sdaemon issues

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

sdaemon.exe [all]