VS 2012 – Project failed to build because of missing Toolset

The builds tools for v120 (Platform Toolset=”v120″) cannot be found

Project -> Properties -> General -> Platform Toolset (as IInspectable correctly commented)

Project file contains ToolsVersion=”12.0″ (…) Treating the project
as if it had ToolsVersion=”4.0″

1. Right-click project -> Unload Project
2. Right-click project -> Edit (name).vcxproj
   • Change this line: <Project DefaultTargets="Build" ToolsVersion="12.0" ...
   • into: <Project DefaultTargets="Build" ToolsVersion="4.0" ...
3. Save, close, Right-click project -> Reload Project