According to a Microsoft announcement, a Windows 11 released in late August prevents customers from signing in to newly added Microsoft account users after restarting or signing out of systems running Windows 11, version 21H2.
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"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 issue only affects the newly added Microsoft account user and only for the first sign in," Microsoft explained.
«This issue only affects devices after a Microsoft account is added. It does not affect Active Directory domain user accounts or Azure Active Directory accounts.»
Microsoft says it addressed this issue through Known Issue Rollback (KIR), a Windows feature designed to roll back non-security Windows bug fixes pushed through Windows Update.
Once released, fixes issued with KIR typically reach all consumer and unmanaged enterprise devices within a day. users can also receive the fix after restarting any affected Windows devices.
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As a workaround, those experiencing this issue can wait for the lock screen to reappear, as it will resolve itself after some time, allowing users to log in as expected.
IT administrators should install and configure a KIR group policy to resolve this known issue on affected enterprise -managed devices
"The specific group policy can be found in Computer Configuration -> Administrative Templates -> KB5016691 220722_051525 Known Issue Rollback -> Windows 11 (original release)," Microsoft added.
To deploy the Known Issue Rollback via Group Policy, you need to go to Local Computer Policy or Domain Policy on your domain controller using the Group Policy Editor to select the version of Windows you need to target.
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Detailed information on how to deploy and configure KIR group policies can be found on the Microsoft support website.
