AllenFilush I have a work account (provided by my boss, it's very small business, and it's Business Basic) and we have a Microsoft Family account for personal use/apps etc. I'm not a techie so it's taken me a while to figure out the issue and it's the same sort of issues as others here; can't use New Outlook to see work emails on client any longer, only on browser. Tried setting the Family account as primary account, as per your instructions above, and it's greyed out. What is the problem? I thought the issue had been fixed?
Similar issue with Teams. I used to use Teams client with work account, and now it won't let me log in. Two Microsoft support engineers from the Personal account side (because I don't have access to the business support) have spent about 3 hours remotely on my machine clearing cache, uninstalling/reinstalling Teams and it's not working. The old Teams client worked for the business. One of the support people reinstalled it, and it worked for a bit before coming up with a pop up asking me to move to New Teams, and no way of refusing (do it now, or when not using Teams) so I'm back to square one. Is this a similar issue of primary account needing to be set up as the paid 365 family one, or what? It's been a huge time waster and still no resolution. Thanks for any advice.