What is the api-ms-win-downlevel-user32-l1-1-0.dll component needed for?Simply stated, a DLL file is an unnamed executable file. It cannot be directly invoked, but it can be called by any executable Windows program.
The api-ms-win-downlevel-user32-l1-1-0.dll process is also known as ApiSet Stub DLL and is a part of Microsoft Windows Operating System. This software is produced by Microsoft (www.microsoft.com). An obsolete or defective version of api-ms-win-downlevel-user32-l1-1-0.dll can cause problems for your computer that can range from slowness to error messages such as these:
- ApiSet Stub DLL has stopped working. Windows is checking for a solution to the problem... (Windows 10, 8, 7)
- ApiSet Stub DLL has stopped working. A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available. (Windows 10, 8, 7)
- api-ms-win-downlevel-user32-l1-1-0.dll has encountered a problem and needs to close. (Windows XP)
- Access violation at address FFFFFFFF in module api-ms-win-downlevel-user32-l1-1-0.dll. Read of address 00000000.
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What you should know about api-ms-win-downlevel-user32-l1-1-0.dll ApiSet Stub DLL
api-ms-win-downlevel-user32-l1-1-0.dll is not part of Windows, but it is important nonetheless. Api-ms-win-downlevel-user32-l1-1-0.dll is found in a subdirectory of C:\Windows or sometimes in the C:\Windows\System32 directory.
The file size is 4,096 bytes.
This so-called dynamic link library (DLL) contains all the functions that have been transferred to a separate file. These transferred functions are available not only to this particular program, but can also be used by other applications. The file has been digitally signed by Microsoft itself to guarantee its authenticity. It also can also affect other applications by changing their properties. Such manipulation can cause an application to do things other than what it is intended to do. This api-ms-win-downlevel-user32-l1-1-0 program does not appear as a visible window, but only in Task Manager. It is unusual for the service not to provide any indication of how and why it is required. The file does not come from Microsoft and is not part of the operating system. api-ms-win-downlevel-user32-l1-1-0.dll appears to be a file that was compressed by an EXE-Packer. This technique is often used by trojans to keep the file size small and also hamper debugging efforts. However, this in itself is not sufficient reason to presume malicious intent, since even well-intentioned, professional software producers take advantage of compressed files. For this reason, 40% of all experts consider this file to be a possible threat. The probability that it can cause harm is high.
If you see this file on your hard drive or in Windows Task Manager, please make sure that it is not a malicious variant. It's a fact that many trojans try to cloak their true identity by calling themselves api-ms-win-downlevel-user32-l1-1-0.dll. With the above information or by using tools like Security Task Manager you can determine if, in your case, the file is an undesirable variant.
What do other computer users say about api-ms-win-downlevel-user32-l1-1-0?
The file spreads very slowly and does not often make an appearance. Therefore, feedback from other users is not yet available.
Summary: source: file.net
How to uninstall the program
To remove ApiSet Stub DLL from your computer, please follow the manual instructions below or use an automatic uninstaller product.
- Click the Windows Start Button. In Windows 8, look for Control Panel.
- Click Control Panel.
- Click Uninstall a program.
- Look for the program in the list of available programs.
- Click Uninstall.
How to tell if api-ms-win-downlevel-user32-l1-1-0.dll (ApiSet Stub DLL) was uninstalled cleanly
After uninstalling, restart your computer. Then start Windows Explorer and see if there is still a folder with the name of the software under C:\Program Files. Be sure to check the Registry as well for remnants of ApiSet Stub DLL. To do this, start "Regedit", then look under "HKEY_LOCAL_MACHINE" > "Software" for ApiSet Stub DLL or the name of the producer. Always keep in mind that only a computer professional should ever directly delete entries in the Windows Registry.
What to do if a program does not uninstall
The easiest way to remove any kind of software cleanly and accurately is to use an uninstaller tool. Because the uninstaller automatically creates a backup, there is no risk of anything going wrong.
Last but not least
If Windows not working quite right for you, or if startup is taking a long time, or api-ms-win-downlevel-user32-l1-1-0.dll is causing problems for you, a good Windows diagnostic tool may very well help. This is especially effective when it comes to older computers that have accumulated vast quantities of "garbage data" as the result of many software installs and uninstalls.
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