Error 0x80070666 When Installing Microsoft Visual C++ FIX [Tutorial]

Error 0x80070666 When Installing Microsoft Visual C++ FIX [Tutorial]

Several Windows users are encountering the “0x80070666” error when trying to install Microsoft Visual C++, Lumberyard or a similar distribution package. The error message is typically reported to occur at the very start of the installation process.

Issues addressed in this tutorial:
Microsoft Visual error 1104
Microsoft Visual error 400
Microsoft Visual c++ error
Microsoft Visual c++ runtime error
Microsoft Visual basic runtime error 1104
Microsoft Visual basic error in excel
Microsoft Visual c++ error windows 11
Microsoft Visual basic runtime error
Microsoft Visual basic error
Microsoft Visual basic runtime error 424
Microsoft Visual basic runtime error 9
Microsoft Visual basic error 400
Microsoft Visual basic runtime error 13
Microsoft Visual c runtime library error windows 11

Error 0x80070666 is a Microsoft Visual C++ installation error. The issue arises for some users when they try to install Microsoft Visual C++ packages (usually C++ 2015 Redistributable) on Windows. The full error message states this:

One or more issues caused the setup to fail… 0x80070666 – Another version of this product is already installed. Installation of this version cannot continue. To configure or remove an existing version of the product, use the Add/Remove Programs.

This tutorial will apply for computers, laptops, desktops, and tablets running the Windows 11 operating system (Home, Professional, Enterprise, Education) from all supported hardware manufactures, like Dell, HP, Acer, Asus, Toshiba, Lenovo, Samsung, and Huawei.