ERROR .NET 4.7 keeps on rolling back during installation on windows 7 SP1

Hello guest, i promised myself to document every challenge i encounter during my operations with Dynamics NAV. Much as this is not directly linked allow me share it as you will not be able to have your Dynamics NAV 2018 install without .NET Framework 4.7

After encountering the above error, i had to search for a way to pass it as my client was waiting. We all know how new clients can be anxious.

From the information i obtained, the roll back and failure to install .NET framework 4.7 may fail because of files that could be left behind on the system in the previous installation attempts.

The solution is uninstall the previous versions of .NET Framework on the PC. However this has significant drawbacks that it may stop some applications on the system that require .NET from operating.

The solution is to do it safely using the .NET framework cleaner tool.
Download the tool here
Run the tool
You can now install you .NET Framework 4.7
Once that is successful, proceed with Dynamics NAV 2018 installation
Good luck!