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copied!<p>I was curious as to the reason for not putting MSVCR100.dll into System32 or SysWOW64. The MSDN article [1] does not say this outright, and no-one else here has explained it, but the reason seems pretty clear:</p> <p><strong>Applications built with different versions of Visual C++ or C# expect to find different versions of MSVR*.dll. If you put MSVCR100.dll into a system folder, you might fix your application, but you stand a good chance of breaking other apps either now or later (whenever you decide to run them) and you probably won't know it's going to happen until that other app reports some other strange error resulting from loading what it thinks is a broken library.</strong></p> <p>The user can fix this by copying the proper version of the library into the "Program Files/Application-Name" folder for the app in question (which probably contains the app's main EXE, and maybe others like Uninstall.exe). The developer can fix it by adding the library to the project in the directory where the EXE will be created (and arrange for it to be installed alongside the EXE by whatever installer you create); the developer can also avoid using the DLL entirely by statically linking (which makes the EXE bigger, but won't try to load the DLL), details at [2].</p> <p>It was not clear from the question which application is trying to load the DLL: Visual C# 2010 itself, or the application being created by means of the MSVC project.</p> <p>(The basics: MSVCR100.dll is the C Runtime Library (abbreviated CRL) for Visual C++. The "R" however stands for "Redistributable"; the full acronym is Micro Soft Visual C Redistributable Dynamically Loaded Library. To reduce the size of the .exe in the application, the library can be dynamically loaded, in which case the function(s) you need get loaded into memory when your app calls them. There is potential for namespace conflicts both in the name of the DLL file itself, and in the (C++-mangled) names of the individual functions and their parameters. A particular DLL file only belongs in the system path if every app that might try to load it will get the functions it expects.)</p> <p>Please correct anything I've gotten wrong. I am a beginner in the world of cross-platform development.</p> <p>[1] support.microsoft.com/kb/326922</p> <p>[2] www.rhyous.com/2010/09/16/avoiding-the-msvcr100-dll-or-msvcr100d-dll/</p>

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