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    Windows 2025 Domain with Windows 2022 member servers loosing (Red X) on Mapped drives overnight.

    It seems to coincide with a warning on the Windows 2022 member server event ID 40970 LSA (LSASrv) The security System has detected a downgrade attempt when contacting the 3-part SPN LDAP/Domain Controller FQDN/Domain@Domain with error code "The encryption type is not supported by the KDC...
    • bswhipp
    • Thread
    • access issues authentication domain controller downgrade attempt error codes event id file explorer group policy kdc ldap name resolution network connectivity processing failures retry mechanism security server management troubleshooting windows server workstation access
    • Replies: 3
    • Forum: Windows Server Forums
  2. News

    KDC Event ID 16 or 27 is logged if DES for Kerberos is disabled

    Continue reading...
    • News
    • Thread
    • authentication des disable event id kdc kerberos logging microsoft security windows
    • Replies: 0
    • Forum: Knowledge Base (KB)
  3. News

    KDC Event ID 16 or 27 is logged if DES for Kerberos is disabled

    Describes how to enable DES encryption for Kerberos authentication in Windows 7 and in Windows Server 2008 R2. More...
    • News
    • Thread
    • authentication des encryption event id kdc kerberos security support windows 7 windows server
    • Replies: 0
    • Forum: Knowledge Base (KB)
  4. News

    KDC cannot process an S4U2Self ticket request on a Windows Server 2008 R2-based computer

    Fixes an issue in which the KDC cannot process an S4U2Self ticket request from an application that uses a credential. Link Removed
    • News
    • Thread
    • application authentication bug credential issue fix kdc s4u2self server 2008 r2 ticket request windows server
    • Replies: 0
    • Forum: Knowledge Base (KB)
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