After a full installation a few weeks ago, I forgot to see if updates installed correctly. As you can see from the screenshot, there's a number which haven't installed. Can I fix the problems at once, or even reset and install again?
Assuming you had / have no connection problems, your computer is "clean" / no intrusions etc the failed updates should still be available / offered to you.
Try only a few at a time so see if they are indeed downloaded / installed.
Start with the oldest.
Suggest you leave .NET Framework till later & do these 1 at a time with a reboot at the end.
Just to be sure.. I suggest you download the free version of Malwarebytes.
Update it immediately.
Do a full system scan
Let us know the results at the end.