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When MAPI is initialized, it performs a query to determine if any dynamically-created profiles that are in the registry are in use. If no reference to a profile is found in memory, the profile is removed from the registry. When MAPI is initialized in a Terminal Services session, the default scope of the search is limited to the active Terminal Services session. Therefore, if the same Microsoft Windows NT account is logged in to two different Terminal Services sessions at the same time, MAPI cannot successfully determine if a profile in the registry is in use. When MAPI cannot successfully determine if a profile in the registry is in use in this situation, MAPI removes the profile from the registry. The removal of the profile also affects the other Terminal Services session.
This problem also affects Mailbox Manager and many other Microsoft Exchange Server 5.5 services that rely on MAPI when the Exchange service account is used to log on to an Exchange Server 5.5 computer by using a Terminal Services session.
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Microsoft Exchange 5.5 Server service pack that contains this hotfix.
To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:
Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.
There are no prerequisites that are required to install this hotfix.
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
Date Time Version Size File name----------------------------------------------------01-Jul-2003 17:44 5.5.2657.50 881,936 Mapi32.dll
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For additional information about the terminology that is used to describe Microsoft product updates, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates