What is SD3Service.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 SD3Service.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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SD3Service.exe file information

Windows Task Manager with SD3Service
SD3Service.exe process in Windows Task Manager

The process known as Supero SD3Service Daemon belongs to software Security Update for Microsoft or Advanced PDF Password or Security Update für Microsoft by unknown.

Description: SD3Service.exe is not essential for the Windows OS and causes relatively few problems. The SD3Service.exe file is located in a subfolder of C:\Windows. Known file sizes on Windows 10/8/7/XP are 40,960 bytes (57% of all occurrences), 49,152 bytes or 45,056 bytes. 
There is no information about the author of the file. The file is located in the Windows folder, but it is not a Windows core file. The program has no visible window. It is not a Windows system file. Therefore the technical security rating is 74% dangerous; however you should also read the user reviews.

Recommended: Identify SD3Service.exe related errors

If SD3Service.exe is located in the C:\Windows\System32 folder, the security rating is 82% dangerous. The file size is 40,960 bytes (91% of all occurrences) or 49,152 bytes. There is no information about the author of the file. The program has no visible window. It is not a Windows core file. The application uses ports to connect to or from a LAN or the Internet.

Uninstalling this variant: In case you experience problems using SD3Service.exe, you can also completely remove Security Update for Microsoft or Advanced PDF Password (Control Panel ⇒ Uninstall a Program).

Important: Some malware camouflages itself as SD3Service.exe. Therefore, you should check the SD3Service.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

Supero Doctor III Client V1.5
  Shawn   (further information)
as wrote Shawn, it's service for SuperMicro motherboard web-monitor, known as "Supero Doctor". Listen 2937 tcp port
It's the SuperoDoctor III service for system management
  Mike Friedman  
Supero Doctor III Client. Wer diesen installiert hat, weiss meistens warum;-)
found it on a computer with an established connection on the above port, Also founf XiWinnet.exe loaded as a service and as a loaded Web Server
Supermicro motherboard monitor sowing fanspeed and temperature
  Thomas   (further information)

Summary: Average user rating of SD3Service.exe: based on 4 votes with 6 user comments. 3 users think SD3Service.exe is essential for Windows or an installed application. One user thinks it's probably harmless. 2 users don't grade SD3Service.exe ("not sure about it").

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Best practices for resolving SD3Service issues

A clean and tidy computer is the key requirement for avoiding problems with SD3Service. 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 SD3Service.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

SD3Service.exe [all]