C++ Redistributable 2010 -

VC++ 2010 redist is the last “old-style” redist that’s still in semi-regular use. It’s not as cursed as 2005/2008 (no brutal WinSxS corruption), but not as smooth as 2015+. Treat it with respect: install both x86 and x64 SP1 versions, and for portable apps, just ship msvcr100.dll and msvcp100.dll locally.

On , VC++ 2010 installs both 32-bit and 64-bit runtimes if you run the x64 redist. But — the 32-bit version registers into SysWOW64 , and the 64-bit into System32 . Sounds fine, except some old installers expect msvcr100.dll in System32 (which is 64-bit) but then try to load it from a 32-bit app. Boom — bad image format error.

Here’s an interesting write-up on the — not just the usual “what it is,” but why it still matters, what’s weird about it, and how it behaves differently from other VC++ redist versions. c++ redistributable 2010

sits in between. It’s the transition point — and that makes it weird.

The "Redistributable" is a package of these runtime components (like msvcr100.dll and msvcp100.dll ). If you have an application built with Visual Studio 2010 but you don't have the full developer suite installed, this package provides the necessary "bridge" to make the app work on your machine. Why are there so many versions on my PC? VC++ 2010 redist is the last “old-style” redist

If the 2010 Redistributable is missing or corrupted, you might see errors such as:

This is self-explanatory. You are trying to install an older version on top of a newer one (e.g., trying to install the 2010 Original Release when you already have 2010 SP1). On , VC++ 2010 installs both 32-bit and

The Mystery of the Microsoft Visual C++ 2010 Redistributable: Why It’s Still on Your PC

Unlike 2015+ (which use vcredist_x64.exe as a small bootstrapper to an actual .exe embedded), 2010 still uses a traditional Windows Installer .msi under the hood.