I understand what you say about looking at Winver. I just looked and its Version 2OH2 (OS Build 19042.1288)
So this explains your message "This is a issue that happens after a 20H2 Or feature updates to 10 including 11."
How often is this (an update to 2OH2) likely to happen ? Would I be likely to have to attempt a Registry alteration often ?
As I said, I can't cope with anything difficult or any unexpected computer issues. They frighten me and make me ill. I am a non-techie Senior Citizen !
If I'm going to have to keep doing things which worry me & make me ill then I am better off doing without WLM 2012 on my Windows 10 Pro laptop (or any later laptop I buy) and hoping my Windows 7 Pro laptop keeps operating for years to come !
I assume if I get WLM 2012 installed on my Windows 10 laptop it will stay there. I won't have to re-install it at any time will I ?
Thank you for your help. No hurry for reply. I'm not doing anything until I'm absolutely certain I know what I would have to do, how to do it & how often and whether I am likely to then provoke issues which I can't cope with.