1. Microsoft Live Mail (or any Live offering.)
2. The new email login system. Use a local login.
But where is the backup for you to roll back to? This is a Windows PC and while I have seen none of the problems at the office, folk bring me problem machines which we'll tackle but with some caveats. That is, if a tile isn't working we replace it or dismiss it. There are too many reasons for those tiles to fail so let's go old school and use plain old email apps like Thunderbird and backup like we always have.
I installed Windows 10 and I'm regretting it! I had a problem with the mail live tile not updating. I contacted support and they wanted to do a remote session which means they will take control of your computer and do some troubleshooting. I don't know what I was thinking because they left my computer a mess. I have new problems now and I am not able to do any administrative changes because the techs messed up my account. Long story short I was told that I would need to reinstall Windows 10. Unfortunately I'm not able to because I can't get past entering an administrator password which I can't enter because it won't let me. This has been a nightmare and I have spent hours on the phone with support only to be told I need to go to the nearest Microsoft store and purchase Win10 or go to a neighbor's and ask to use their computer to download it on a flash drive. What? Are you kidding me? They messed up my system and I have to do what? I am so disappointed with support and my laptop (which I've had for less than a year) is now running very slow, I get error messages, I've lost some photos and now I don't have access to administrative files. I want to tell anyone who hasn't installed it to not do it! I am fed up with Microsoft and I need to file a formal complaint. If anyone has any ideas or comments I would like to hear them. Thanks for letting me rant.