i'm sorry but if you read the original post.
There is no protection history - and no quarantined items list for Defender.
So no amount of links to web pages refering to those will help.
...

Under the quarantine folder there are a couple of folders containing files, but the have very long filenames with no file types i.e. they have been renamed so are not directly recoverable.

The...

Not sure how that helps.
The issue is, there is no links for Defender Quarantine.

I use windows 20H2 and plugged in a usk drive with portable apps and windows defender deleted one of the files (a key reader & backup) to quarantine.
I've used this stick many times and the file is...

If you have treid some of the other suggestions above then go for an upgrade repair, you should not loose any of the proggies installed.
I didn't and it fixed my start menu problem.

Thanks for your help Dalchina.
The uopgrade repair fixed the problem and was totally painless, and as far as I can tell hasn't broken anything.
Which has got to be a first for a windows operating...

SFC /SCANNOW was the first thing I tried.
Looks like an upgrade repair could be the last but one option.

Thanks for your help
Already tried a Clean boot and in safe mode, even created a new user it still happens on all.
Shellexview is a neat programme, but this did not help. I suspect theres a...

Unfortunately tile-locker is not much help. It just changes the flag on in the group policy, exactlythe same as I treid manually.
As as note I can move complete groups around and if I add a new...

As far as I can tel that link just points to a page that says change group policy editor setting which is what you listed

I checked the local group policy, start screen layout is not set, so its not that that is preventing the movement of tiles.
and taskbar is not locked, although I don't think thats relevant.
I'm...

After my upgrade from Windows 7 64 to Windows 10 it worked.
End of November I did a fresh install of Windows 10. Never got round to trying to move icons until recently so don't know if it ever...

First I couldn't go into tablet mode, then discovered it only workswith 1 monitor so I disconnected my 2nd monitor. Unfortunately same symptems in Table mode.
One interesting side effect in Tablet...

Thanks for your reply, I've been putting off using an in-place upgrade or repair, everything else works perfectly and I've got the rig how I want it. Don't want to jeopardise that for what is a...

I cannot move the tiles on the start menu.
As soon as I try to click and drag one it immediately disapears, only to reappear in the original location when I reboot.
Everything else seems to work...