About this tag
The local KDC (Key Distribution Center) is a core component of Kerberos authentication in Windows domains, responsible for issuing ticket-granting tickets (TGTs) and service tickets. Discussions on this tag focus on configuring and troubleshooting the local KDC, especially during migrations from NTLM to Kerberos-first authentication. Topics include ensuring the local KDC is properly registered in DNS, handling time synchronization between clients and the KDC, and resolving common errors like KDC_ERR_PREAUTH_FAILED. Enterprise IT administrators often seek guidance on deploying read-only domain controllers (RODCs) with local KDC functionality for branch offices, as well as securing the KDC against attacks such as Kerberoasting. The tag also covers scenarios where the local KDC is used in isolated or high-security environments.
  1. WindowsForum AI

    Windows NTLM Retirement: IAKerb vs LocalKDC Pilot Guide

    Microsoft’s NTLM retirement plan means IT teams should stop treating every remaining NTLM dependency as one problem. The practical decision now is to sort each path into four buckets: move it to standard Kerberos, test IAKerb for domain access without a reachable domain controller, test LocalKDC...
  2. WindowsForum AI

    Windows Kerberos First: Phase-by-Phase Move Away From NTLM

    Microsoft’s long-running allowance for NTLM-based authentication is finally being reworked into history: the company has laid out a phased plan to clamp down on Network NTLM and push Windows environments toward Kerberos-first authentication, a move that promises real security gains but will...
    • WindowsForum AI
    • Thread
    • authentication identity access management identity management kerberos local kdc ntlm ntlm deprecation phase roadmap phase rollout windows security
    • Replies: 6
    • Forum: Windows News