When I tried to update as requested initially the update consistently failed.
When it finally went through Windows would not load and could not be recovered through the normally recovery processes. Through work I have found the latest update is completely deleting hard drive encryption which makes it pretty obvious why Windows isn't loading. I've ordered a recovery disc and may even have to go to a clean install. Meanwhile work computers are having to work without hard disc encryption which is not good practice.
You could not have made a bigger mess of this if you had been trying