That is wrong because NET Framework can be installed on Windows 7, even for version 4.6.2. I've checked the Microsoft website and the Net Framework page, and it says the following:
On Windows 7 systems, the .NET Framework requires Windows 7 SP1. If you are on Windows 7 and have not yet installed Service Pack 1, you will need to do so before installing the .NET Framework.
You probably lack the Service Pack 1 installation. To install it, go to Start and type Windows Update. Install the latest Service Pack for your Windows OS and then you'll have the possibility to download and install Net Framework 4.6.x.
Download Net Framework: https://www.microsoft.com/en-us/download/details.aspx?id=53344