How to remove autofill email from 'choose an account' part of Profile page in Microsoft Edge?

JFriendly  Has anyone ever figured this out?  I've seen several posts on different sites suggesting that you can remove it by simply deleting the account from Windows Settings / Accounts..... NOT.  I have customer PC's that have no account information whatsoever listed anywhere under the Windows Accounts page, but Edge somehow still has saved an account email from some prior user and has retained it under "Choose an Account" on these systems. This DOES NOT require a password to login, and consequently is a huge security risk.  If you simply click on the suggested account, it logs into their account and obtains all links, saved passwords, & profile settings from whatever user is specifed. You can specify to disable Edge logins, but re-enabling brings that person's account login right back & the problem remains.  If anyone knows how to resolve this, I'm all ears!  Thanks