When any application in your windows operation system needs ext-ms-win-ntuser-windowclass-l1-1-0.dll Windows will look for that DLL file in that software folder and its own system folders. If DLL file is not found you are most likely to see this error.
Sometimes this error occurs if a DLL file is missing, renamed or moved to any other location.
Mostly seen errors for a missing DLL file are as follow:
This application failed to start because ext-ms-win-ntuser-windowclass-l1-1-0.dll was not found. Re-installing the application may fix this problem.
ext-ms-win-ntuser-windowclass-l1-1-0.dll not found
Windows failed to start the application because this ext-ms-win-ntuser-windowclass-l1-1-0.dll is missing.
There was a problem opening ext-ms-win-ntuser-windowclass-l1-1-0.dll.
ext-ms-win-ntuser-windowclass-l1-1-0.dll can not be loaded.
File execution can not proceed ext-ms-win-ntuser-windowclass-l1-1-0.dll not found.
How To Fix ext-ms-win-ntuser-windowclass-l1-1-0.dll missing error ?
Try Reinstalling the software/application that needs the ext-ms-win-ntuser-windowclass-l1-1-0.dll.
Update your software/application which you have installed recently.
Try to update your windows operating system.
Download ext-ms-win-ntuser-windowclass-l1-1-0.dll File and install in your windows.
Clear your registry and optimize your Windows OS.
If you are looking for ext-ms-win-ntuser-windowclass-l1-1-0.dll you are at right place you can download the file from download button. Install ext-ms-win-ntuser-windowclass-l1-1-0.dll and fix your error. If you face any other error after installing this file visit this website and search that file download it and install to fix the DLL file error.