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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. DLL hell can appear in many different ways, wherein affected programs may fail to run correctly, if ...
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.
Dependency hell is a colloquial term for the frustration of some software users who have installed software packages which have dependencies on specific versions of other software packages. [ 1 ] The dependency issue arises when several packages have dependencies on the same shared packages or libraries, but they depend on different and ...
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.
If a dynamic library that an program depends is unavailable (deleted, moved, renamed) or replaced with an incompatible version, the executable will fail at run-time. This is called dependency hell and on Windows DLL hell. Issues can be minimized by naming library files with a version number and by following versioning rules that require ...
In older versions of Windows, programs which linked against MSVCRT.DLL were expected to install a compatible copy in the System32 folder, but this contributed to DLL Hell because many installers failed to check the library version against the installed version before replacing it.
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.
Because in-process COM components are implemented in DLL files and registration only allows for a single version per CLSID, they might in some situations be subject to the "DLL Hell" effect. Registration-free COM capability eliminates this problem for in-process components; registration-free COM is not available for out-of-process servers.