The file API-MS-WIN-CORE-LIBRARYLOADER-L1-2-1.DLL is a Dynamic Link Library (DLL) file that is part of the Windows operating system, developed by Microsoft Corporation. This particular DLL file is known as an "ApiSet Stub DLL," and it serves as a part of the core library that assists with loading other libraries within the Windows environment.
The term "ApiSet Stub" essentially means that this DLL acts as a kind of placeholder or intermediary, directing calls from software applications to the appropriate system functions that they need to operate correctly. This modular approach allows software developers to call upon existing code in the operating system, reducing duplication and increasing efficiency.
If you encounter errors associated with this DLL, such as "file not found" or "file corrupted," it generally indicates a serious issue with your Windows system that might affect its stability and functionality. Such errors could be due to various reasons like file corruption, malware infection, or even a faulty Windows update. Standard solutions for resolving these issues usually include running the built-in Windows system file checker (sfc /scannow), updating or reinstalling the operating system, or, in extreme cases, a complete system restore. As this is a core system file, you should not attempt to manually delete or alter it.