#7 You should uninstall Onedrive so you can save your files to where you want without Onedrive intercepting them.
Office 365 records everything. I have Office 2016 on my home pc and do not sign into a Outlook account. I have one for work and they use Office 365 / Microsoft 365 yet I find on my Office 2016 on my home pc, links back to my work docs and my profile image I use. I find that I am signed into say Word with my work id which I never did. I sign out but it will sign me in again later on.
I also see my profile image from Outlook at Amazon!! and I am signed in there as I order all the time from them. Companies are linked together to follow you around the internet and using software on your pc to do so other then just a web browser.
Your iPhone and android devices listen (SPY) on what you are saying and deliver ads that only you see be it on the phone or tablet or the tv set if you sign in say using a samsung or roku etc account.
I don’t use outlook mail or windows mail server. I just use it to access a separate mail server. I do have an MS account, required for the laptop thingy with Win 10 on it. But none of them are connected to each other. Probably doesn’t matter. They only need a few clues to connect the dots as to who a person it.
Oh you said ‘uninstall’. I misread it as ‘install’.
OK I may just do that.
Haven’t used it. Figured it was some cloud thingy. Never logged into it. Should be no problem to uninstall it.