CDO - MAPI Session Logon Fails with MAPI_E_LOGON_FAILED If No ThreadToken (268272)
The information in this article applies to:
- Microsoft Exchange Server 5.5
- Microsoft Outlook 2000
- Collaboration Data Objects (CDO) 1.2, when used with:
- the operating system: Microsoft Windows 2000
- Collaboration Data Objects (CDO) 1.21, when used with:
- the operating system: Microsoft Windows 2000
This article was previously published under Q268272 SYMPTOMS
On Windows 2000, when an ActiveX EXE using CDO 1.2x creates a MAPI Session object and then calls the Logon method, the Logon method can return MAPI_E_LOGON_FAILED when the ActiveX EXE's identity is configured (under DCOMCNFG) to run under a specific user. If the ActiveX EXE is configured to run under the "interactive user" then it works fine and the Logon succeeds. The exact same application runs properly on a Windows NT 4.0 server.
CAUSE
A MAPI Session Logon call from a thread needs the ThreadToken set.
RESOLUTIONTo resolve this problem, obtain the latest service pack for Exchange Server 5.5. For additional information, click the following article number to view the article in the
Microsoft Knowledge Base:
191014 XGEN: How to Obtain the latest Exchange Server 5.5 Service Pack
The English version of this fix should have the following file attributes or later:
STATUSMicrosoft has confirmed that this is a problem in CDO version 1.21. This problem was first corrected in Exchange Server 5.5 Service Pack 4.
| Modification Type: | Major | Last Reviewed: | 11/25/2003 |
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| Keywords: | kbbug kbExchange550sp4Fix kbfix kbQFE KB268272 kbAudDeveloper |
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