Microsoft has acknowledged a new Windows 11 issue after installation of the August update KB5016691.  This issue causes sign-in failure after adding a new Microsoft account user in Windows 11. This issue only affects devices after adding a Microsoft account.

This sign-in issue keeps happening for a brief 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 has resolved this issue using Known Issue Rollback (KIR) on Sep 07. It might take up to 24 hours for the resolution to propagate automatically to Windows 11 devices. Microsoft also notes that restarting Windows 11 device might help the resolution apply to your device faster.

Unable to sign in after adding a new Microsoft Account user in Windows

StatusOriginating updateHistory
ResolvedOS Build 22000.918
KB5016691
2022-08-25		Resolved: 2022-09-07, 13:56 PT
Opened: 2022-09-07, 13:56 PT

After installing KB5016691 and adding a new Microsoft account user in Windows, you might be unable to sign in for a brief 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.

This issue only affects devices after adding a Microsoft account. It does not affect Active Directory domain users accounts or Azure Active Directory accounts.

Workaround: If you encounter this issue, it will automatically resolve itself after a brief time. You will need to wait for the lock screen to appear again, you should be able to login as expected.

Resolution: This issue is resolved using Known Issue Rollback (KIR). Please note that it might take up to 24 hours for the resolution to propagate automatically to consumer devices and non-managed business devices. Restarting your Windows device might help the resolution apply to your device faster. For enterprise-managed devices that have installed an affected update and encountered this issue can resolve it by installing and configuring a special Group Policy. The special Group Policy can be found in Computer Configuration -> Administrative Templates -> KB5016691 220722_051525 Known Issue Rollback -> Windows 11 (original release).

For information on deploying and configuring these special Group Policy, please see How to use Group Policy to deploy a Known Issue Rollback.

Group Policy downloads with Group Policy name:

Important: You will need to install and configure the Group Policy for your version of Windows to resolve this issue.

Affected platforms:

  • ​Client: Windows 11, version 21H2
  • ​Server: None

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