What is ContextHandler.dll?

The genuine ContextHandler.dll file is a software component of Ashampoo WinOptimizer by Ashampoo.
ContextHandler.dll is a DLL (Dynamic Link Library) file that belongs to Ashampoo WinOptimizer, a drive performance management tool. 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 if known to create problems.

WinOptimizer is a collection of utility programs designed for the Windows platform that optimize and benchmark disk usage and speed. The program offers disk cleaning utilities through its One Click Optimizer program that remove orphaned files, program remains and temporary files. The Internet Cleaner program removes unwanted temporary files and cookies that might make Internet usage traceable. HDD Inspector can warn users of future hard disk errors using S.M.A.R.T. data from the drive. Live Tuner makes sure critical processes receive all the resources necessary for optimal system functioning.

Ashampoo GmbH & Co. KG is a German company that designs, develops and distributes software products for the Windows operating system. The company is well known for its flagship product, Ashampoo WinOptimizer, as well as the burning program, Ashampoo Burning Studio, photo editing software, Ashampoo Photo Commander, and the screen capture program, Ashampoo Snap. The company was founded in 1999 by Rolf Hilchner and is currently based in Oldenburg, Germany.

ContextHandler stands for Context Menu Handler

ContextHandler.dll is a Windows DLL file. DLL is the abbreviation for Dynamic Link Library. DLL files are needed by programs or web browser extensions, because they contain program code, data, and resources. The following information can help you determine if ContextHandler.dll is a Windows system file or if it belongs to an application that you can trust.

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ContextHandler.dll file information

The process known as Context Menu Handler belongs to software Glary Utilities or Defender Pro PC Repair by Glarysoft ( or ashampoo GmbH & Co. KG (

Description: ContextHandler.dll is not essential for the Windows OS and causes relatively few problems. ContextHandler.dll is located in a subfolder of "C:\Program Files (x86)" (for example C:\Program Files (x86)\Glary Utilities\). Known file sizes on Windows 10/8/7/XP are 36,152 bytes (36% of all occurrences), 64,800 bytes and 5 more variants. 
A .dll file (Dynamic Link Library) is a special type of Windows program containing functions that other programs can call. This .dll file can be injected to all running processes and can change or manipulate their behavior. The program has no visible window. There is no detailed description of this service. It can change the behavior of other programs or manipulate other programs. It is not a Windows core file. ContextHandler.dll is certified by a trustworthy company. ContextHandler.dll is a Verisign signed file. ContextHandler.dll is able to record keyboard and mouse inputs, monitor applications and manipulate other programs. Therefore the technical security rating is 52% dangerous, however you should also read the user reviews.

Uninstalling this variant: The software vendor offers the option to uninstall the software Glary Utilities or Ashampoo WinOptimizer using the Uninstall a Program function of Windows Control Panel (Windows: Start, Settings, Control Panel, Uninstall a Program), use the software publisher’s support site [1][2] or make sure that you have installed the latest version [1][2].

Recommended: Identify ContextHandler.dll related errors

Important: Some malware camouflages itself as ContextHandler.dll, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the ContextHandler.dll 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

gehört zu ashampoo winoptimizer
Component of Ashampoo WinOptimizer
  Alex M.  
Gehört zu Ashampoo AntiSpyWare. Größe 582 KB (596.824 Bytes), Win XP Pro, 07.11.2012 (Link oben) nicht erreichbar.

Summary: Average user rating of ContextHandler.dll: based on 5 votes with 3 user comments. 2 users think ContextHandler.dll is essential for Windows or an installed application. 2 users think it's probably harmless. One user thinks it's neither essential nor dangerous.

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Best practices for resolving ContextHandler issues

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

ContextHandler.dll [all]