Tải Visual C++ 12

We are looking khổng lồ start building internally used software in 64 bit, và found this morning that installing the x64 VS 2013 redistributable either uninstalls or makes inaccessible the x86 dlls. We have a lot of software & do not want khổng lồ rebuild everything in one go for a hard cutover. Is there a reasonable way to lớn install both versions of the redistributable packages so they co-exist, so that a migration may be done instead of a hard cut from one build khổng lồ the other for everything? Development machines with Visual Studio 2013 installed have no issue, as it provides both sets of dlls and makes them both accessible at the same time.Bạn đã xem: Update for visual c++ 2013 redistributable package

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After installing VC++ 2013 update for an x86-based application, the x64 Visual C++ 2013 runtime libraries are missing. For example, Installing the “Visual C++ Redistributable 2013 x86 v12.0.30501” removes binaries for non-target architectures i.e “Visual C++ Redistributable 2013 v12.0.21005” x86 and x64!

The 12.0.30501 version of the VCRedist can be downloaded from https://www.microsoft.com/en-us/download/details.aspx?id=40784

Resolution - install https://support.microsoft.com/en-us/kb/3138367This fix makes sure that both versions of the Visual C++ redistributable are visible when you add or remove programs after installation of the update.

Affiliation - Microsoft tư vấn Engineer


Turns out the issue seems lớn be the x64 redistributable clobbering the registry entry. The registry entries for the redistributables can be found here:


When x86 version is installed, it adds it"s own key to lớn whatever exists. When the x64 version is installed, it deletes the other keys (in this case the already installed x86 key) và then adds it"s own. The dlls are there, just not properly referenced so they can be used.

The quick solution here is lớn install the x64 redist first, THEN the x86 version, and then both will be usable without issue.

Why the x64 clobbers but the x86 doesn"t is beyond me.

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