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MSVCRT.DLL is the C standard library for the Visual C++ (MSVC) compiler from version 4.2 to 6.0. It provides programs compiled by these versions of MSVC with most of the standard C library functions. These include string manipulation, memory allocation, C-style input/output calls, and others. MSVCP*.DLL is the corresponding C++ library.
Side-by-side assembly (SxS, or WinSxS on Microsoft Windows) technology is a standard for executable files in Windows 98 Second Edition, Windows 2000, and later versions of Windows that attempts to alleviate problems (collectively known as "DLL Hell") that arise from the use of dynamic-link libraries (DLLs) in Microsoft Windows.
A dynamic-link library (DLL) is a shared library in the Microsoft Windows or OS/2 operating system. A DLL can contain executable code (functions), data, and resources. A DLL file often has file extension.dll even though this is not required. The extension is sometimes used to describe the content of the file.
DLL hell is an umbrella term for the complications that arise when one works with dynamic-link libraries (DLLs) used with older Microsoft Windows operating systems, [1] particularly legacy 16-bit editions, which all run in a single memory space.
The functions reside mainly in core files of the OS: kernel.exe (or krnl286.exe or krnl386.exe), user.exe and gdi.exe. Despite the file extension of exe, such a file is accessed as a DLL. Win32 is in the 32-bit versions of Windows (NT, 95, and later). The functions are implemented in system DLL files including kernel32.dll, user32.dll, and ...
Data files with the same file format as a DLL, but with different file extensions and possibly containing only resource sections, can be called resource DLLs. Examples of such DLLs include multi-language user interface libraries with extension MUI , icon libraries, sometimes having the extension ICL , and font files, having the extensions FON ...
On IA-64 , three files are needed for a slower [5] software emulation: Wow64cpu.dll, a "CPU abstraction layer"; IA32Exec.bin, the x86 software emulator; and Wowia32x.dll, the bridge between the emulator and the WOW64 system. [6] On ARMv8 64-bit, xtajit.dll for x86 emulation, and wowarmhw.dll for switching to ARM32 mode. [3]
The Global Assembly Cache (GAC) is a machine-wide CLI assembly cache for the Common Language Infrastructure (CLI) in Microsoft's .NET Framework. The approach of having a specially controlled central repository addresses the flaws [citation needed] in the shared library concept and helps to avoid pitfalls of other solutions that led to drawbacks like DLL hell.