I just updated another computer, as build 2004 was now showing in Windows Update. This is a tablet and after upgrading, both the touchscreen and audio were not working. When I initially installed build 1909, it had been a bit of a hassle getting both of these working, as Windows is not able to install working drivers for these. Without the correct audio driver installed, the usual "Sound, video and game controllers" section is absent.
I was able to fix the issues by running the setup files in the subfolders of C:\SwSetup folder, which were still there from when I had originally installed the correct drivers. This is an HP tablet and when you run the driver installers they provide on their website, the contents get extracted to subfolders in C:\SwSetup so that they are there for later use. This was an easy to do, as I have keyboard dock, which although it doesn't have a touchpad, has USB ports, so I was able to plug in a mouse.
I presume that I will have the same issues, every time I upgrade to a new build, as no doubt once again, working drivers will be replaced with more recent drivers, which are not compatible with this tablet. For me it was a quick and easy fix, but I'm sure that for most users, it would cause some frustration, trying to get everything working again. On good thing however, is that when checking for updates, Windows Update doesn't find newer drivers to install - so it only happens when upgrading to new builds.
This is the second touchscreen computer I've used in recent months and with the other one, I also had to download and install some drivers to get the touchscreen working, after doing a clean install of Windows.