Funny isn't it how there are always so very many security holes in the O/S ready to be exploited. Always requiring a plethora of security updates . . .

It's almost as if they put the holes there deliberately !

FYI, I have now updated my pcs to the latest Cumulative level.

My W10 64 bit Notebook went through the update very well, even though it took over an hour to get there.

Having had a quick look, it (C level) appears to have some new stuff but nothing which I'd run through hoops for.

There are quite a few security fixes which I still want to trawl through.

My main W10 64 bit Desktop , however, ran into a problem and has been unable to achieve the new level.

It seems that my pc, and some others in various forums, has a corrupt file somewhere which prevents the update.

No damage is done, as the pc reverts back to the old W10 level, but will need to do much trawling of the web to get a solution.

A clean w10 install might become necessary but I'm not looking forward to all of the restoring/re-installing which often happens when you do this.

I might just wait for MS to provide a fix but I don't know how many years I've got left....!