Reverse organization policies on Windows 10

I installed my work’s Office 365 Plus on my home machine while I work at home. At some point in the installation, it asked me if I wanted to use my organization’s policies or not. At the time, I didn’t think much of it, and said yes. Office installed fine and I went about my business.

A few days later, though … Windows demands I change my PIN code "because of my organization’s policies." And when I go into settings, I’m told that "some settings are managed by (my) organization." For example, here’s Windows Update now:

I don’t want these organization policies on my machine, mandating when I must change my PIN or passwords, and what I can and can’t change about my settings.

How can I reverse this? Would installing do it? Or some deeper fix?

By the way, uninstalling does not fix this problem.