Reinstall .Net Framework 4.7
a. First, we must uninstall .NET Framework
Download and Run the following tool, it will help you uninstall one or all versions except 4.7.
https://blogs.msdn.microsoft.com/astebner/2008/08/28/net-framework-cleanup-tool-users-guide/
To Uninstall 4.7, This one is tough, it depends on what version of 10 you have. IF you have windows 7 then this should work: you must uninstall the Update KB3186539 Control panel -> Programs and Features -> View Installed Updates -> KB3186539
.Net 4.7 Eventually gets locked into Windows 10, you have to roll back the update to 1607, I don’t plan to roll back the users OS just to reinstall 4.7.
The Windows Club explains this well, Read here:
http://www.thewindowsclub.com/rollback-uninstall-windows-10-creators-update
To reinstall .NET you need 3-4 installers
a. .NET 1.1
-1.1 isn’t always needed, if you don’t think you need it, you can skip it.
https://www.microsoft.com/en-us/download/details.aspx?id=26
-.NET 1.1 SP1
When you go to run this, it might ask you to download and install 3.5. Go ahead.
https://www.microsoft.com/en-us/download/details.aspx?id=33
b. .NET 3.5 (includes 2.0 and 3.0)
c. Without installing: https://docs.microsoft.com/en-us/dotnet/framework/install/dotnet-35-windows-10
Direct Installer - https://www.microsoft.com/en-us/download/details.aspx?id=21
d. .NET 4.7
Offline Installer –
https://www.microsoft.com/en-us/download/details.aspx?id=55167
e. Which ever version hereafter