What is BDTUpdateService.exe?

The genuine BDTUpdateService.exe file is a software component of PC Tools Browser Defender by PC Tools.
This is a utility developed by PC Tools that provides computer protection through informative assessment of websites and the possible dangers they pose. It allows the user to make informed choices when browsing the Internet. Symantec acquired PCTools in 2008 and retired the PCTools suite of software in 2013.

BDTUpdateService stands for Browser Defender Threat Update Service

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 BDTUpdateService.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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BDTUpdateService.exe file information

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

The process known as Browser Defender Update Service belongs to software Threat Expert Ltd. Browser Defender or PC Tools Spyware Doctor with AntiVirus by Threat Expert ( or PC Tools (

Description: BDTUpdateService.exe is not essential for Windows and will often cause problems. BDTUpdateService.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 112,592 bytes (48% of all occurrences), 546,768 bytes and 9 more variants. 
The program is not visible. BDTUpdateService.exe is a Verisign signed file. BDTUpdateService.exe is digitally signed. It is not a Windows system file. BDTUpdateService.exe is able to monitor applications and manipulate other programs. Therefore the technical security rating is 29% dangerous, however you should also read the user reviews.

Uninstalling this variant: It is possible to do the following:
  • use the software publisher’s support site [1][2]
  • update [1][2] the program to the latest version
  • uninstall the associated program (Start > Control Panel > Uninstall a Program > Browser Defender or Browser Guard)

Recommended: Identify BDTUpdateService.exe related errors

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

is part of Browser Defender updater by Threat Expert
Das Programm nervt, da es wenn es sich aktiviert alles übrige lahmlegt. Der Process im Taskmanager ist nicht beeinflussbar. Das erscheint mir verdächtig.
I see this running and it uses up 100% of my CPU when it runs. You can see if as a task and it uses 100% of the CPU when it runs.
I believe it is part of browser defender and uses 95%+ cpu when it kicks in to update whatever it is updating
I noticed a LOT of browser errors (slow, frozen, leaving copies of itself in memory even after being closed down, etc.) with IE8. Using Task Manager, I also saw that BDTupdateservice would occasionally run, using up about %98 of the cpu, rendering the computer almost non-functional for about 1-1/2 minutes. I located the file, changed one letter in its file extension, so it would no longer load, and now everything works great. IE8 has not experienced ANY problems and my computer no longer gets put on hold while BDT does whatever it does.
bin momentan am manuellen Malewares suchen. Bin darauf gestoßen, stammt aber bei mir vom installierten Spyware Doctor.
I noticed major problems with system freezing, 100% CPU usage and IE and windows explorer crashes directly after installing PC Tools. I am uninstalling it now.
  Anzy Faubion  

Summary: Average user rating of BDTUpdateService.exe: based on 5 votes with 7 user comments. One user thinks it's probably harmless. 3 users think it's neither essential nor dangerous. One user suspects danger. 2 users don't grade BDTUpdateService.exe ("not sure about it").

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Best practices for resolving BDTUpdateService issues

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

BDTUpdateService.exe [all]