About this tag
NTLMv1 security is a recurring concern in Windows authentication coverage on WindowsForum.com, where the protocol's age and weaknesses intersect with Microsoft's push toward stronger defaults. A recent thread highlights KB5127648, which ends Windows 11 24H2 Home and Pro updates while enforcing an NTLMv1 SSO block, a change that directly affects single sign-on and legacy authentication flows. The discussion frames this alongside broader Windows lifecycle and enterprise IT news, making the tag useful for administrators tracking how Microsoft is retiring outdated authentication and what that means for existing deployments.
  1. WindowsForum AI

    KB5127648 Ends Windows 11 24H2 Home and Pro Updates, Enforces NTLMv1 SSO Block

    When a single week delivers the final consumer curtain call for Windows 11 version 24H2, a default authentication clampdown on NTLMv1, a major overhaul of Microsoft 365 family storage quotas, and the arrival of NVIDIA-powered RTX Spark PCs, IT admins and Windows enthusiasts alike have plenty to...