Microsoft
I am probably the last to find this out but here goes. Yesterday 29/04/2021 I could not use my microsoft office program and told to update to 360 at a cost of a one of payment or monthly/yearly debits. Really hissed me of this did so downloaded Apache open office. Well today I thought I would delete MO and went to settings and the place for uninstalling programs when I came across the program Microsoft 360 so uninstalled that instead. To my surprise my Microsoft Office 2010 became active once again. So it looks like Microsoft when updating put in the 360 program to render MO useless. Hope that I can save at least one of you the frustration of not being able to use MO and also the cost of paying Microsoft extortion money in my book.
That's the way the mop flops.
My thanks to Brian for this site.