VS 2017 not found VC 3.0

 Today when installing an update of VS 2017 prof.(15.6.6), when restarting VS2007, it does not find anything referred to VC 3.0. I tried to repair VC 3.0, and run createenv.bat, but VS 2017 doesn't find anything about VC 3.0 and doesn't appear as installed in "about Microdoft Visual Studio 2017". What can I do to fix it?