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Active Directory Web Services fails to read the settings for the specified Active Directory Lightweight Directory Services instance (1023864)


  • After installing vCenter Server, the Active Directory Web Services (ADWS) is unable to read the settings for the specified Active Directory Lightweight Directory Services (AD LDS) instance
  • You see the error:

    Active Directory Web Services encountered an error while reading the settings for the specified Active Directory Lightweight Directory Services instance. Active Directory Web Services will retry this operation periodically.

  • You see the Microsoft Event ID: 1209


This issue is resolved in VMware vCenter Server 4.1 Update 3 released August 30, 2012, VMware vCenter Server 5.0 Update 2 released December 20, 2012 and VMware vCenter Server 5.1 Update 1a released May 2013.

For further information, see the following:
To download the latest vCenter Server release, see the VMware Download Center.

This issue occurs if ADWS is unable to read the ports that AD LDS is configured to use for LDAP and Secure LDAP (SSL) services.
ADWS reads these registry entries to check for the configuration settings:

Key: HKLM\SYSTEM\CurrentControlSet\Services\<ADAM_INSTANCE_NAME>\Parameters
Value: Port LDAP
Data: 1 – 65535 (default: 389)

Key: HKLM\SYSTEM\CurrentControlSet\Services\<ADAM_INSTANCE_NAME>\Parameters
Value: Port SSL
Data: 1 – 65535 (default: 636)

To resolve this issue:
  • Verify that the above registry keys exist and have appropriate values.
  • Ensure that the NT AUTHORITY\SYSTEM account has permission to read the values.
  • Verify that ADWS runs under the Local System account.
  • Ensure that the HKLM\System\CurrentControlSet\Services\<ADAM_INSTANCE_NAME>\Parameters\Port SSL
    key is of type REG_DWORD. If the value is REG_SZ, you must delete it and create a new REG_DWORD with the value 636 (decimal).

Update History

01/31/2013 - adding PR 788814

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