Most problems with the Lightweight Directory Access Protocol (LDAP) Service occur when appropriate hot fixes are not applied or when the components are installed in the wrong order. In addition, poor performance or failure can be caused by incorrect configuration of the underlying systems (adding invalid Service Packs or configuring the underlying SQL database incorrectly). To use LDAP successfully, you must first understand the system components and how they interact, then thoroughly plan your entire configuration before installing any part of the software.
This troubleshooting guide consists of the following sections:
The diagnostic questions in this section will help you identify the problem when LDAP doesn’t appear to be operating correctly. The questions can be grouped into the four categories shown in the following table:
| Troubleshooting Category | Diagnostic question |
| System setup |
|
| Configuration |
|
| Error identification |
|
| SQL settings |
|
The following list contains the latest versions of software that make up a complete membership system with LDAP. Always install the listed software in the order shown:
You can search for available Knowledge Base articles on various support topics on http://support.microsoft.com/search/default.asp.
This service provides a Lightweight Directory Access Protocol (LDAP) interface for industry-standard, platform-independent access to the Membership Directory. This service can generate the events listed in this section.
396 The evaluation period for this product has expired and could no longer be started.
Type: Error
Recommended Action:
Acquire a released version of the product.
397 LDAP server could not establish SSL channel.
Type: Error
Recommended Action:
Make sure the proper certification is installed correctly.
398 Cannot allocate %1 because there is not enough memory available.
Type: Error
Recommended Action:
Increase memory.
399 Cannot allocate %1 because the preallocated limit has been reached.
Type: Error
Recommended Action:
Increase the maximum number of dynamic objects allowed.
400 LDAP Service cannot initialize its security.
Type: Error
Recommended Action:
Check the Microsoft® Windows NT® Server configuration and restart the computer.
401 LDAP Service cannot initialize the socket library.
Type: Error
Recommended Action:
Check the TCP/IP configuration.
402 LDAP Service rejected the connection attempt because there are too many users connected.
Type: Warning
Recommended Action:
Increase the available connections on the General tab of the LDAP Properties dialog box in MMC.
404 LDAP Service cannot open the LDAP/TCP service. The data area, shown below, contains the return error code.
Type: Error
Recommended Action:
No action is required.
405 LDAP Service cannot create the main connection socket. The data area contains the return error code.
Type: Error
Recommended Action:
Validate TCP/IP configuration and connectivity.
408 A call to a system service failed unexpectedly. The data area contains the return error code.
Type: Error
Recommended Action:
No action is required.
417 LDAP Service cannot open the LDAP registry key %2.
Type: Error
Recommended Action:
Refresh the installation of the LDAP Service.
418 LDAP Service cannot read registry key %2
Type: Error
Recommended Action:
Refresh the installation of the LDAP Service.
481 The LDAP Service cannot initialize the following object: %1.
Type: Error
Recommended Action:
No action is required.
485 A system call (%1) failed unexpectedly. The data area contains the return error code.
Type: Warning
Recommended Action:
No action is required.
530 LDAP Service has been started.
Type: Informational
Recommended Action:
No action is required.
531 LDAP Service has been stopped.
Type: Informational
Recommended Action:
No action is required.
532 LDAP Server instance %1 has been stopped.
Type: Informational
Recommended Action:
No action is required.
533 LDAP Server instance %1 has been paused.
Type: Informational
Recommended Action:
No action is required.
534 LDAP Server instance %1 has been unpaused.
Type: Informational
Recommended Action:
No action is required.
535 LDAP Server instance %1 has been created.
Type: Informational
Recommended Action:
No action is required.
536 LDAP Server instance %1 has been deleted.
Type: Informational
Recommended Action:
No action is required.
2133 The server has detected a previous instance and cannot boot until the old instance goes away.
Type: Error
Recommended Action:
Try to start the service after 120 seconds.
2500 The server failed to startup due to an initialization error.
Type: Error
Recommended Action:
Verify configuration; consult other log entries; refresh the installation.
2501 The server failed with a runtime error.
Type: Error
Recommended Action:
Contact Microsoft Technical Support.
2502 LDAP Service: %1.
Type: Error
Recommended Action:
The recommended action is message-dependent.
2600 LDAP Dynamic Replication failed due to an initialization error.
Type: Error
Recommended Action:
Verify configuration.
2601 LDAP Dynamic Replication failed with a runtime error. Error description is: %1.
Type: Error
Recommended Action:
No action is required.
2602 LDAP Dynamic Replication Info: %1.
Type: Error
Recommended Action:
No action is required.
2603 LDAP Dynamic Replication Warning: %1.
Type: Error
Recommended Action:
No action is required.
This section lists the administration events that can occur for the LDAP service.
300 An LDAP Service configuration has not been loaded.
Type: Error
Recommended Action:
Verify configuration. Check the LDAP property page.
301 Could not create Remote DCOM object: %1.
Type: Error
Recommended Action:
No action is required.
302 Could not create DCOM object: %1.
Type: Error
Recommended Action:
No action is required.
303 Could not convert parameter value to string: %1.
Type: Error
Recommended Action:
No action is required.
304 Could not convert parameter value to integer: %1.
Type: Error
Recommended Action:
No action is required.
305 Could not convert parameter value to boolean: %1.
Type: Error
Recommended Action:
No action is required.
306 The given IP address is not supported on the LDAP Service computer.
Type: Error
Recommended Action:
Check the LDAP property page.
Port numbers must be above 100.
Type: Error
Recommended Action:
Change the port number to #389 or any other valid port number above 100.
308 The given IP address is not valid.
Type: Error
Recommended Action:
Recheck the IP address.
309 Could not initialize Winsock: %1
Type: Error
Recommended Action:
Reinstall Winsock.
310 Could not obtain IP Address from Host Name.
Type: Error
Recommended Action:
Check TCP/IP configuration, DNS configuration, and target host name.
311 The given parameter value must be positive.
Type: Error
Recommended Action:
Validate the referenced parameter.
312 Invalid authorization mode selected.
Type: Error
Recommended Action:
Consult the documentation.
313 Invalid Database type selected.
Type: Error
Recommended Action:
Reset the database types on the Root Database tab and Directory Properties tab of the LDAP Properties dialog box in MMC.
350 LDAP Administration Failure: %1.
Type: Error
Recommended Action:
No action is required.
400 Could not access configuration database: %1.
Type: Error
Recommended Action:
No action is required.
401 Could not open server configuration information. Server instance may not exist.
Type: Error
Recommended Action:
Recheck the server instance.
402 Failed to write to the configuration database.
Type: Warning
Recommended Action:
No action is required.
404 Could not save configuration changes.
Type: Error
Recommended Action:
No action is required.
405 Could not add new server instance to the configuration database.
Type: Error
Recommended Action:
No action is required.
406 Could not obtain server installation directory: %1
Type: Error
Recommended Action:
No action is required.
407 Could not create default data store: %1
Type: Error
Recommended Action:
No action is required.
408 Could not delete server instance information. Specified instance may not exist.
Type: Error
Recommended Action:
No action is required.
409 Data Store Administration Failure.
Type: Warning
Recommended Action:
No action is required.
410 Could not obtain server host name.
Type: Error
Recommended Action:
Check connectivity and network configuration.
411 Could not resolve server host to obtain IP address.
Type: Error
Recommended Action:
Check connectivity and network configuration.
412 Only Access database can be Compacted/Repaired.
Type: Error
Recommended Action:
No action is required.
413 The Compact/Repair operation has failed.
Type: Error
Recommended Action:
No action is required.
414 Could not replace database with compacted version: %1
Type: Error
Recommended Action:
No action is required.
415 Could not obtain server ID. Specified server instance may not exist.
Type: Error
Recommended Action:
No action is required.
416 Could not obtain server state. Specified server instance may not exist.
Type: Error
Recommended Action:
Recheck the server instance.
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