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workstation access

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Discussions tagged with workstation access on WindowsForum.com cover authentication and connectivity issues in Windows Server environments. A recurring theme involves Windows 2022 member servers losing mapped drive connections overnight, linked to LSA downgrade detection errors (event ID 40970) and Group Policy processing failures (event ID 1030). These problems often stem from encryption type mismatches between domain controllers and member servers, affecting workstation access to network resources. Troubleshooting focuses on SPN configuration, Kerberos encryption settings, and domain controller compatibility to restore reliable mapped drive access.
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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 error codes event id file explorer group policy kdc ldap name resolution network processing failures retry security server management troubleshooting windows server workstation access
    • Replies: 3
    • Forum: Windows Server Forums
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