A Microsoft file hosting and synchronization service.
What happens in my case is if you have a second device for example a laptop as well as a desktop both using the one account cloud to synchronise between the devices One of which you may not use quite so often and it would appear in my case that my laptop used less frequently which instead when opening up and updating your latest data from the most updated desktop data, it went into reverse in which the less frequent device over writes with the data a few days old or even longer in my case 4 months
This was the only assumption that I could come up with why it happened to me, …and this also happened during the autumn …and it would appear from the posts I have read since that Microsoft have not taken any steps to clear this mess up.
They are quite happy to keep reminding you about taking up their subscriptions and not doing a thing to give the safest best protection to its customers data,
For an organisation as big as this, it’s really quite a disgusting attitude.
I now use a different backup programme altogether certainly not Microsoft to back up on a hard disk once a week to safeguard any other disasters