Microsoft has indicated that a range of products, including their own and third-party solutions like smart card authentication products, single sign-on (SSO) systems, and identity management platforms, may be experiencing issues linked to a specific feature. This has led to an increase in support calls within certain organizations, particularly affecting machine-to-machine authentication. To mitigate disruptions from logon failures, Microsoft recommends that organizations temporarily change the registry key AllowNtAuthPolicyBypass from ‘2’ back to ‘1’, as detailed in KB5057784.