Microsoft C Runtime

| Era | Version | Key Characteristics | |------|---------|----------------------| | 1980s–1990s | Visual C++ 1.0–4.x | Single-threaded static CRT ( libc.lib ); multi-threaded ( libcmt.lib ). | | ~1995 | VC++ 4.0+ | Introduction of msvcrt.dll (shared, process-wide CRT). | | 2002–2008 | VC++ 7.0–8.0 (VS .NET 2002–2005) | Side-by-side assemblies (WinSxS) introduced; private SxS manifests. | | 2010–2015 | VC++ 10.0–14.0 | msvcr100.dll , msvcr110.dll , etc.; per-version DLLs. | | 2015+ | Visual Studio 2015–2025 | – major redesign, Windows OS component; vcruntime140.dll for compiler support; static linking unified. |

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Contains code specific to the Microsoft Visual C++ compiler, such as exception handling, debugging support, and runtime checks . This library must match the version of the compiler used to build the app . | Era | Version | Key Characteristics |