What is ShellExtensionU.dll?

ShellExtensionU.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 ShellExtensionU.dll is a Windows system file or if it belongs to an application that you can trust.

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

ShellExtensionU.dll file information

The process known as WinMerge Shell Integration library or ShellExtension Module belongs to software WinMerge by

Description: ShellExtensionU.dll is not essential for the Windows OS and causes relatively few problems. ShellExtensionU.dll is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 69,632 bytes (63% of all occurrences) or 65,536 bytes. 
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. The service has no detailed description. It can change the behavior of other programs or manipulate other programs. The ShellExtensionU.dll file is not a Windows core file. ShellExtensionU.dll is able to record keyboard and mouse inputs. Therefore the technical security rating is 67% dangerous, however you should also read the user reviews.

Uninstalling this variant: It is possible to uninstall the software WinMerge using the Uninstall a Program function of Windows Control Panel (Windows: Start, Settings, Control Panel, Uninstall a Program), go to the support area of the WinMerge website or verify that you have installed the latest version.

Recommended: Identify ShellExtensionU.dll related errors

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

associated with WinMerge software
WinMerge est un outil Open Source de différenciation et de fusion pour Windows. WinMerge peut comparer et les dossiers et les fichiers, en repésentant les différences dans un fichier texte visuel qui est facile à comprendre ou manipuler.
  Dr. Ashley   (further information)

Summary: Average user rating of ShellExtensionU.dll: based on 1 vote with 2 user comments. One user thinks ShellExtensionU.dll is essential for Windows or an installed application. One user is not sure about it.

Do you have additional information? Help other users!
What do you know about ShellExtensionU.dll:
How would you rate it:
Link for more info:
Your Name:

Best practices for resolving ShellExtensionU issues

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

ShellExtensionU.dll [all]