Hi,
Two ways to turn the Windows features on or off.
- Go to control panel, then programs and features. Then select Turn Windows features on or off.
-or-
- Mouse Right click on start (bottom left of screen), select Search and type Turn in the seach area. Turn Windows features on or off will appear on screen, select it.
Then .Net framework 3.5 will be first in the list. Untick the little box next to it and press enter. Windows will do a few things. Wait until
windows asks you to restart your machine. Restart, then go to check Windows Update and see if KB5015814 downloads and installs correctly. If it does, then you can reactivate .Net 3.5 by doing almost the same thing as turning it off, i.e ticking the little box next to it and press enter.
If Windows asks you to search your system or the internet to reactivate .Net, you can choose either. I did select to download it from the internet.
If it still does not download and install correctly, I suggest you pause the Windows update for one or two weeks and wait until Microsoft provides a fix. Installing OS over OS can be quite complicated and if you are not experienced enough, I would not recommend to do it.
PS: I did what Nicholas Joslin1 explained in his post on July 14, 2022 on the same thread to turn off .Net 3.5 and also what JeffBakst explained in his post on same date, only difference I did turn off Malwarebytes and .Net 3.5 in two steps. I first deactivated Malwarebytes and this did nothing, then turned off .Net 3.5 and found it was the problem.
I hope this helps.
JC_H