Article ID: 234630
Article Last Modified on 9/4/2007
APPLIES TO
- Microsoft Exchange Server 5.5 Service Pack 2
This article was previously published under Q234630
SYMPTOMS
After you install Exchange Server 5.5 Service Pack 2 (SP2), applications that use Cdo.dll may start receiving an error of 0x800401F0 (CO_E_NOTINITIALIZED) indicating that CoInitialize() has not been called. The most common environment where this may be seen is with event scripts that run using the Microsoft Event Service. This problem will typically be seen with event scripts that log on to a new MAPI session from within the script.
The application event log may show events that look similar to the following:
Event ID: 6
Source: MSExchangeES
Description: An unexpected MAPI error occurred while processing binding "Script Name". Error returned was [0x800401f0].
Event ID: 16
Source: MSExchangeES
Description: Unexpected error 0x800401f0 occurred during processing of timer-based events.
CAUSE
Changes were made in Exchange Server 5.5 SP2 to allow Cdo.dll to properly support the Component Object Model (COM) Multi-Threaded Apartment (MTA) model. The Microsoft Event Service exposed a problem with these changes.
RESOLUTION
To resolve this problem, obtain the latest service pack for Exchange Server version 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:
Component: MAPI
| File name | Version |
|---|---|
| Mapi32.dll | 5.5.2622.0 |
STATUS
Microsoft has confirmed that this is a problem in Microsoft Exchange Server version 5.5 Service Pack 2. This problem was first corrected in Exchange Server 5.5 Service Pack 3.
Additional query words: script failure event cdo mapi unitialized
Keywords: kbbug kbfix kbqfe KB234630
