The lab instructions say to install the .NET 3.5 Feature but I did not see anything about that in the video and when I clicked on score it shows as not installed.
Also, I did everything as listed in the video in regards to uninstalling those roles and features and after clicking on score it said I had not uninstalled those roles and features.
It did say that I had successfully installed the server role.
I saw your updated comment that you were able to complete everything in the lab except installing the .NET 3.5 Feature. To install it you can try with:
Install-WindowsFeature Net-Framework-Core -source D:\sources\sxs
We have updated the lesson transcript to include the command.
Thank you,
Ricardo