What is QuickTime.dll?

The genuine QuickTime.dll file is a software component of QuickTime by Apple.
QuickTime.dll is a DLL (Dynamic Link Library) file that belongs to QuickTime, a propreitory framework designed by Apple to handle files of various formats. DLL files store data, code and resources needed by one or more programs in order to function correctly. This is not an essential process for Windows and can be disabled. QuickTime was initially released in 1991 as an add-on for System Software 6, a former operating system for Macintosh-based computers. The QuickTime Player currently supports various formats of digital video, picture, sound, panoramic images, and interactivity, and is available for free for the Mac OSX and Windows platforms. Apple Inc. is an American company that develops consumer electronics, computer software, as well as online services. The company is known for its smartphones, tablet computers, personal computers, media players and smartwatches. Apple develops the OS X and iOS operating systems, the iTunes media player, the Safari web browser, as well as several dozen productivity suites. Apple was founded by Steve Jobs, Steve Wozniak, and Ronald Wayne in 1976, to develop and sell personal computers. The company is currently based in Cupertino, California, USA. part of a process that recognizes the connected Apple devices (iPod, iPhone, iPad) and is part of the program iTunes. You can also turn off the wireless (Wi-Fi) synchronization of iTunes, then ATH.exe will consume fewer resources.

QuickTime stands for QuickTime Dynamic Link Library

QuickTime.dll is a browser extension for Internet Explorer. This add-on enables several additional functions for Internet Explorer. You can disable it through the Extras menu (key combination Alt + X) under Manage Add-ons. The following paragraph provides more information about QuickTime.

Click to Run a Free Scan for QuickTime.dll related errors

QuickTime.dll file information

The process known as QuickTime belongs to software QuickTime by Apple (

Description: QuickTime.dll is not essential for the Windows OS and causes relatively few problems. The QuickTime.dll file is located in a subfolder of the user's profile folder. Known file sizes on Windows 10/8/7/XP are 270,336 bytes (88% of all occurrences) or 268,288 bytes. 
This .dll file is a Browser Helper Object (BHO) that runs automatically every time you start your web browser. BHOs are not stopped by personal firewalls, because they are identified by the firewall as part of the browser itself. BHOs are often used by adware and spyware. IDs used by this BHO include D4704207-C86B-4811-951E-6F322F9CEDE7 or E6DE11C7-EEB6-4C70-974E-6980905468AD. There is no information about the author of the file. The program is not visible. The QuickTime.dll file is able to monitor web browsers. The file is not a Windows core file. Therefore the technical security rating is 51% dangerous.

Uninstalling this variant: In case you experience problems using QuickTime.dll, you can uninstall the program using the Control Panel ⇒ Uninstall a ProgramMozilla Firefox.

Recommended: Identify QuickTime.dll related errors

Important: Some malware camouflages itself as QuickTime.dll, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the QuickTime.dll process on your PC to see if it is a threat. If QuickTime has changed your browser's search engine and start page, you can recover your browser's default settings as follows:

Reset default browser settings for Internet-Explorer ▾
  1. In Internet Explorer, press the key combination Alt + X to open the Tools menu.
  2. Click Internet options.
  3. Click the Advanced tab.
  4. Click the Reset... button.
  5. Enable the Delete personal settings option.
This will reset your Internet Explorer to its default settings. Your browser will start with the familiar start page and search engine—without popups, ads, cookies, but all browser add-ons are deleted too [1]. Make cleaning up your browser and your computer simpler and safer with Security Task Manager.


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Best practices for resolving QuickTime issues

The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active QuickTime process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the QuickTime.dll on your computer displays annoying ads, slowing it down. This type of unwanted adware program is not considered by some antivirus software to be a virus and is therefore not marked for cleanup.

A clean and tidy computer is the key requirement for avoiding PC trouble. 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.

Other processes

QuickTime.dll [all]