| Event Id | 9542 |
| Source | MsexchangeIS |
| Description | Initialization of external interface OLEDB failed; Error Unknown error. |
| Event Information | In Microsoft Exchange 2000 server, if you are viewing 101 EXOLEDB event ID messages and 9542 MSExchangeIS event ID messages, some MDAC components may be incorrectly registered, and you must re-register
them. The following is a list of the .dll files that you must have so that you can re-register to resolve this issue. You must stop the Information Store service before you re-register, and then you can restart the Information Store service after you successfully register the following .dll files: C:\Program Files\Common Files\System\Ole DB\oledb32.dll C:\Program Files\Common Files\System\Ole DB\Oledb32r.dll C:\Program Files\Common Files\System\Ole DB\Msdaipp.dll C:\Program Files\Common Files\System\ado\Msado15.dll C:\Program Files\Common Files\System\Ole DB\Msdaurl.dll To register a .dll file, at a command prompt, type regsvr32 followed by the path to and name of the .dll file. For example, to re-register the Oledb32.dll file in the first bulleted item, type the following command: regsvr32 c:\program~1\common~1\system\oledb~1\oledb32.dll |
| Reference Links | How to Troubleshoot the "503 Service Unavailable" Error Message in Outlook Web Access 2000 Exchange Store Does Not Start: Errors 7024, 1026, 9542, and 5000 How to troubleshoot the "503 Service Unavailable" error message in Outlook Web Access in Exchange Server 2003 Users may receive a "503 Service Unavailable" error message in Exchange Server 2003 when they try to use a Web browser to gain access to OWA Issues that occur when the crashonauditfail registry value is set to 1 on an Exchange computer or that occur when the Security event log reaches the maximum size in Windows 2000 Server |
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