Solved: Overcoming the Challenges Posed by Error Code 0x80040712

Error Code 0x80040712 Summary

The error code 0x80040712 is commonly encountered when using Microsoft’s Active Directory Lightweight Directory Services (AD LDS), also known as the Application Directory Service. This issue can arise from misconfigured application pools in IIS or incorrectly installed AD LDS instances, among other possibilities. The error typically signifies a problem with directory service binding during connection attempts to AD LDS databases or servers. It can occur under various conditions and environments where applications rely on AD LDS for their operation, such as identity management systems or custom software solutions that utilize the Lightweight Directory Access Protocol (LDAP) or Server-Side Extension (SSE) features of AD LDS.

Description of Error Code 0x80040712 and Common Scenarios Where It Appears

The error 0x80040712 can occur in several scenarios:
– When attempting to connect to an AD LDS instance from a .NET application, often due to configuration issues with the application’s binding settings or problems with certificate trust between client and server.
– During LDAP queries executed by applications configured to use AD LDS as their directory store, if there are issues with network connectivity, firewall rules blocking necessary ports (such as 389 for unencrypted LDAP and 636 for LDAPS), or incorrect DNS resolution leading to connection timeouts or refused connections.
– In the context of setting up a new AD LDS instance on Windows Server via PowerShell commands or graphical user interface tools like ADSI Edit, where mistakes in specifying port numbers, binding information, or naming contexts can result in failure messages including 0x80040712.
– When configuring web applications to use AD LDS through IIS by creating application pools and virtual directories that reference the AD LDS instance incorrectly. Common errors include setting an invalid path for the virtual directory, specifying incorrect credentials for the application pool identity, or failing to properly grant necessary permissions to access AD LDS.

Howto solve error code 0x80040712

To resolve the error 0x80040712, follow these detailed steps:

  1. Ensure that all network components involved in connecting to the AD LDS instance are operational and configured correctly. Verify that firewall rules allow traffic through necessary ports (389 for LDAP and 636 for LDAPS).
  2. Check if there is a certificate issue preventing trust between client and server applications. Install any required certificates on both sides, ensuring they match the expected domain names or IP addresses.
  3. Review application configuration files such as app.config in .NET environments to confirm that binding information correctly specifies the LDAP:// or LDAPS:// URL of your AD LDS instance with appropriate credentials.
  4. If using IIS to host an application connecting to AD LDS, verify settings within the IIS Manager for the relevant website and application pool. Confirm the existence of a properly created virtual directory pointing at your AD LDS instance’s path.
  5. Run PowerShell commands or use ADSI Edit tool to examine the AD LDS configuration on the server-side. Ensure that port numbers are set correctly and that necessary permissions exist to allow connections from client machines.

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