Techdows published a workaround for the 'We can’t sign in to your Account' issue in Windows 10 build 20226.
[Workaround] Windows 10 build 20226 'We can't sign in to your Account' Error
Microsoft is investigating the reports of logon issues faced by insiders running Windows 10 build 20226. Today the company has come up with a workaround to bypass the issue.
[Workaround] Windows 10 build 20226 'We can't sign in to your Account' Error