On 2 out of 3 PC's that I updated the wifi printer had to be reinstalled after the update. After the update on my brother's PC he couldn't get any wifi until he got rid of ZoneAlarm. Classic Shell updated itself to 4.3.0 after booting up on two of my PC's and the other said the program wasn't compatible and it had therefore been uninstalled. I reinstalled Classic Shell (4.3.0) without any difficulty. Other than those minor hiccups all running smoothly now.....except of course like many others my webcam won't work but MS promise a fix this month.
With all these updates I'm going to blow my ISP's 50Gb download limit for the second month running......
