OK. So I’ve downloaded Windows10 1909, using the Download Tool suggested by Alex, and upgraded my desktop to 1909 Pro. After having to install the latest WiFi dongle drivers and Video card drivers the system is working well. I’ve also downloaded WUSShowHide. However, after going to Group Policy to defer updates I’ve been able to “Show updates but not download them” (setting of 2) I can’t find the “Target Release version” policy. It’s there on my laptop (also 1909 with August updates) but not on my desktop. So I’ve got the delay for feature updates set to 365 in Group Policy. There are no updates showing on WUSShowHide and none shown in Settings. My question is, is there a “switch” I have to throw to have TargetReleaseVersion appear in the Group Policies of Windows Update for Business?
A side question – Why are external drives showing up twice in Windows Explorer? With different drive letters? Yet when I expand them they contain exactly the same files and images.