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Published Jul. 2, 2025

DNSName components must begin with a letter error while starting LDAP server in Apache DS

Written By

Dávid Hegedüs

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Issue

  • During the configuration of Apache DS I encountered an issue that resulted in an IOException that interfered with starting the LDAP server:
    ERROR [org.apache.directory.server.wrapper.ApacheDsTanukiWrapper] - Failed to start the service.
    java.io.IOException: DNSName components must begin with a letter

Environment

  • Liferay 7.x
  • ApachDS 2.0.0.AM26

Resolution

  • Either update your Java version since in theory, it is caused by a Java bug
  • Change your Computer name to a value that starts with a letter

Additional Information

 

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