If you have the software but some libraries are missing, you can add them through Windows. Control Panel Programs and Features Autodesk Revit Content Libraries 2017 Uninstall/Change When the wizard opens, select Add/Remove Features
A review of the download process itself is necessary because Revit content management is notoriously finicky. revit 2017 content library download top
The most reliable method to obtain the missing library is through your official Autodesk account: : Log into the Autodesk Account Portal. Revit 2017 Content Library Download Top If you