But I don't use or advise using the Windows 10 email login for many reasons. Some folk can use it but it comes at a price. I use the local login method.
Hotmail support ended years ago as MSFT migrated to a new system. ANY change and you might trigger an upgrade. Be sure your contacts and content are backed up.
I have a computer with windows 7 Professional and a new computer with Windows 10. I have a Hotmail account with 7. Will I have to change my PASSWORD when I change to using Windows 10?