![]() Sure, there may be some redistributable packages on there that you don't need-but if you manually remove a redistributable package that some programs are still using, you could cause them to not run correctly and, in some cases, even cause problems in your Windows installation itself. If you uninstall a program, that program will not automatically remove the redistributable upon which it relied, since it has no way of knowing if other applications also rely upon it. You never really know which of your installed applications rely on each redistributable. That means that, for example, if a developer used Visual C++ 2005 (or Visual Studio 2005) to create a program you're installing, you can expect to see the Visual C++ 2005 Redistributable installed on your system along with the program. When a developer codes in a specific version of Visual C++, the code libraries for that version must also be present on the user's system for the application to run. But if you have a 64-bit version of Windows (which almost all computers are these days), you'll see both versions, because a 64-bit Windows can run both 64-bit and 32-bit applications.Īny additional versions of the Visual C++ Redistributable you see on your system were installed along with some program that required it. ![]() If you have a 32-bit version of Windows, you won't see those 64-bit versions of the redistributable. You'll also note that I've also got both the 32-bit (x86) and 64-bit (圆4) versions installed. The specific versions that get installed depend on which version of Windows you're using. I'm using Windows 10, which comes with the 20 Visual C++ Redistributables. Some are installed along with Windows itself. That shared code takes the form of dynamic link libraries (DLLs), a term most Windows users have come across at some point or other. The programming environment includes access to a lot of shared code libraries, which let developers use already-developed code for specific procedures instead of having to write their own from scratch. ![]() It offers developers a single application in which they can write, edit, test, and debug their code. It was originally a standalone product, but is now included as part of Microsoft Visual Studio. Microsoft Visual C++ is a integrated development environment (IDE) used to create Windows applications in the C, C++, and C++/CLI programming languages. Join us as we take a look at what these things are and why there are so many installed on your PC. If you've ever scrolled through your list of installed programs in Windows, wondering why there are so many versions of the Microsoft Visual C++ Redistributable on there, you're not alone. Not all programs use the same versions of the code libraries, however, so it is common to have multiple versions installed at the same time on Windows. So I'm going to guess you already have the VS 2019 (v142 I think) runtime installed and therefore cannot install any older versions including VS 2015/2017 (v140, v141).Microsoft Visual C++ Redistributables are code libraries that many Windows applications require to run. There is no reason to as apps will be using the newer version anyway. At the bottom of this article it mentions an explicit installation block is in place such that you cannot install an older C++ runtime (v14x) on a machine that already has a newer version installed. Newer versions are fine.Īs for your error I believe it might be explained here. So if you build your app in VS 2015/2017/2019 then you only need at least the version of the runtime that your code compiled against. This can of course change in the future but will then result in a newer v15 runtime. At least between 20 all the runtime versions are compatible. Instead each new version of VS uses a minor update to the base v14 runtime. ![]() Starting with VS 2015 MS hasn't changed the major version # of the C++ runtime. NET, having later major versions doesn't cause older software to automatically use them. If you remove the runtime and then try to run an app that relies on it that app will fail. Personally I'd be leery of removing the C++ runtime as you have no way of knowing what other apps are relying on it.
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