C++ Redistributable 2010 -

When downloading, you will see two versions. It is critical to understand the difference:

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. c++ redistributable 2010

You can’t safely uninstall VC++ 2010 redist if any app uses it — but Windows won’t tell you which. Tools like Dependency Walker or ListDLLs only help if the app is running. The real solution: use vcredist_x64.exe /uninstall in quiet mode, but it might break apps silently. When downloading, you will see two versions