LDAP respond to TCP ports but not to UDP

Problem:

LDAP didn’t respond to 389 UDP Port

 Image

Solution:

Enable IPv6, to enable it follow the Below steps:

  1. Enable IPv6 from TCPIP configuration
  2. Enable it from registry key HKLM\SYSTEM\CurrentControlSet\services\TCPIP6\Parameters\DisabledComponents = ffffffef
  3. Then reboot DC

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