Revit 2015: Templates and families not installed

To install the content: 

1. In the Control Panel, uninstall Autodesk Revit Content Libraries 2015.

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p style="direction:rtl;">من لوحة التحكم uninstall Autodesk Revit Content Libraries 2015

2. Select Add/Remove Features.

3. Select the content to install.

لريفيت 2014

Installing additional Revit content libraries