WU error 0x800706f7 / occasional "Not Activated" dialog - W7 Pro 64

Odd - but that may itself indicate the source of a problem....
There's a mass od duplications in both files, and I'm not used to working with the xml variant anyhow, so this is going to take some heavy lifting.
Back when I can sort through it!

Nah - I'll get there in the end, and CVS/TXT is likely to be even more confusing

Thanks for that!
There's actually not a lot of problems there - the biggest source of errors appears to be a scheduled task that may be generating a mass of EventID 1903 errors in HHCTRL.
Often, this is SpyBot's Updating service, or another updater service for an AV or similar.
In your case, there appear to be two such tasks - each generating an error every 5 minutes.
Please check your Scheduled Tasks for entries that have such frequency, and see if anything shouts at you.
If it is Spybot, then I would suggest uninstalling it, since it's not very well-regarded any more.

What AV and/or Firewall are you using? what other AV's have ever been installed?

Malwarebytes Anti-Malware - free version. Malwarebytes | Free Anti-Malware & Internet Security Software

As far as AV is concerned, then MSE is almost certainly good enough for you unless you make a habit of going to dangerous sites.

Both run perfectly fine on the default settings.

Let's have another look at the Event logs - see if they've cleared up at all now