userenv.dll Error Fix

What is a DLL?

DLL is short for Dynamic Link Library and is a file that contains computer code and resources that can be used by multiple programs at the same time. DLL files allow programmers to use the same code to add features to multiple programs without having to write new code for each one.

There are many programs that rely on DLL files to function properly so when a DLL file is damaged or missing it causes system errors and program crashes.


What is userenv.dll?

Userenv.dll is at the very core of the Windows Operating System. Userenv.dll is a basic dynamic link that starts the Windows User Application Programing Interface (API). Userenv.dll is a DLL that Windows cannot do without and if it is missing or damaged Windows will not function.

Userenv.dll acts as the connection between the operating system and applications you are running on your computer. The user interface gives the ability to create and manage screen windows. The userenv.dll interface also includes the basic controls like scrollbars, buttons, mouse and keyboard inputs, as well as other tasks for the GUI (Graphic User Interface).

The userenv.dll also includes the SDK (Software Development Kit) which gives users the tools needed to develop and create software using the Windows API and other Windows technology. Every program written for Windows must use the Windows API so having these tools easily available makes Windows an easy operating system to develop for.


Suggested fix if your userenv.dll is damaged or missing:

Because userenv.dll is such a vital part of the Windows Operating System the only readily available option to repair a missing or deleted userenv.dll file is to reinstall your operating system. Without userenv.dll Windows will not start so there is no way for an average user to troubleshoot this problem.



Userenv.dll Is Created By:

Microsoft Corporation


Know File Path:



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