Oh, I installed two OSes last year: Ubuntu on my then daily driver (it still is my private one) and a clean Windows ten on my son's laptop. That used to be my old back-up and had my old company account on it, in addition to his school teams account. I tried to convert it to a local admin and throw his educational MS Office license on it. It ended with buying a second market Win10 license (I bought two, only one worked) and a clean, new install. Everything else just failed. I'll never use a MS Account for anything again.
That expends to MS Office subscriptions as well. I once bought one through (stupid, I know) GoDaddy as an extension to my domain mail service. It never worked, not once. I still paid for it, so. The user account didn't even exist on MS's end. Only way to get rid of it was to cancel the credit card behind it. MS stopped bothering me after two months of unpaid subscriptions...
That expends to MS Office subscriptions as well. I once bought one through (stupid, I know) GoDaddy as an extension to my domain mail service. It never worked, not once. I still paid for it, so. The user account didn't even exist on MS's end. Only way to get rid of it was to cancel the credit card behind it. MS stopped bothering me after two months of unpaid subscriptions...