What is downloader.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 downloader.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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Downloader.exe file information

Windows Task Manager with downloader
Downloader.exe process in Windows Task Manager

The process known as BitDefender Update Downloader belongs to software Baidu PC App Store or The Witcher (version 2 Patch Downloader) or Bitdefender Total Security (version 2013) by CD Projekt RED or Baidu or Bitdefender (

Description: Downloader.exe is not essential for Windows and will often cause problems. Downloader.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 8/7/XP are 307,104 bytes (50% of all occurrences) or 364,576 bytes. 
The program has no visible window. The downloader.exe file is certified by a trustworthy company. Downloader.exe is not a Windows core file. Downloader.exe is able to monitor applications. Therefore the technical security rating is 38% dangerous, however you should also read the user reviews.
If you experience any issues with installation of downloader.exe, you can also uninstall Bitdefender Total Security 2013 from your computer using the Control Panel applet "Add/Remove programs".

Recommended: Identify downloader.exe related errors

Important: Some malware camouflages itself as downloader.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder, for example Trojan.Win32.Migr.j (detected by Kaspersky), and TrojanDownloader:Win32/Troxen!rts (detected by Microsoft). Therefore, you should check the downloader.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

Looks suspicious
  Ryan   (further information)
it seems to be dangerous
It is a big nuisance for working of IE Unable to remove it
  Dr Anand Prakash  
opens suspicious webpages
It is disguised malware installer. It appears on sites where the use thinks they are downloading a 'torrent.' It may download a torrent but it also installs this malware.
hangs up the computer by occupying RAM with Opera Firefox. might come from bitdefender
The file was used for BitDefender's Anti-Virus 2013 updating process. No threats found.
  Adam Clark  
It is often a mandatory download if you get to ' immediate download' sites. It seems highly dangerous to me to download and activate an exe file from peopel you dont know, purely so you can download other files
The Bitdefender antivirus update executable. In C:\Program Files\Bitdefender\Bitdefender 2013
It came to me from the Softonic downloadsite. I don't like to instal software in order to download a file.
  Edmond Petrus  
required for download
It is necessary for BitDefender if you have it installed
  Alex W.   (further information)
It's part of Bitdefender Total Security (or any other Bitdefender product, really).

Rating chart

Summary: Average user rating of downloader.exe: based on 19 votes with 13 user comments. 8 users think downloader.exe is essential for Windows or an installed application. 3 users think it's probably harmless. One user thinks it's neither essential nor dangerous. 4 users suspect danger. 3 users think downloader.exe is dangerous and recommend removing it. One user is not sure about it.

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Best practices for resolving downloader issues

A clean and tidy computer is the key requirement for avoiding problems with downloader. 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 doing a repair of your installation, or in the case of Windows 8, 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 downloader.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

downloader.exe [all]