Microsoft has recently indicated that a range of products may be experiencing issues linked to a specific feature. This includes not only their own offerings but also third-party solutions such as smart card authentication products, single sign-on (SSO) systems, and various identity management platforms. While the impact is not universal, it has been significant enough to lead to an uptick in support calls within certain organizations, compounding existing challenges related to machine-to-machine authentication.
Microsoft recommendations
To mitigate the disruptions caused by these logon failures, Microsoft has provided a clear recommendation. The user impact arises when the registry key AllowNtAuthPolicyBypass is configured to a value of ‘2’. To address this issue, organizations are advised to temporarily adjust the setting from ‘2’ back to ‘1’. This adjustment is detailed in the Registry Settings section of KB5057784, serving as a practical workaround for affected users.
