According to a statement from Microsoft, a Windows 11 update released in late August prevents its customers from signing in with newly added Microsoft account users after restarting or logging out of systems running Windows 11, version 21H2.
” After installing KB5016691 and adding a new Microsoft account user to Windows, you may be unable to sign in for a short time after the first restart or sign out . The problem only affects the newly added Microsoft account user and only for the first sign- in,” Microsoft explained.
” This issue only affects devices after adding a Microsoft account. It does not affect Active Directory domain user accounts or Azure Active Directory accounts. »