Microsoft KB Archive/251475

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Article ID: 251475

Article Last Modified on 10/27/2006


  • Microsoft Exchange Server 5.5 Standard Edition
  • Microsoft Exchange Server 5.5 Service Pack 1

This article was previously published under Q251475


When you connect a multiple-server Microsoft Exchange 5.5 site to Lotus Notes using the Microsoft Exchange Calendar Connector (Calcon), the Calcon process quits when it attempts to do a free/busy query of the Exchange Server side, and you may receive the following error message:

The Calendar Connector cannot receive calendar requests from the Free Busy Information public folder for site /o=Organization/ou=SITENAME on server SERVERNAME due to MAPI error 80040110.

The following event may also be reported in the application event log:

Event ID: 5013
Source: MSExchangeCalCo
Type: Error
The Calendar Connector cannot receive calendar requests made to the "Schedule+ Free Busy Information - /o=Organization/ou=SITENAME" system folder on SERVERNAME due to MAPI error 80040110 and is shutting down.


If there are multiple servers that are running Exchange Server 5.5 in the same site, and if these servers require free/busy updates from Notes, Calcon can quit if it attempts to access a server that does not have Exchange Server 5.5 Service Pack 2 (SP2) installed.


To resolve this issue, update all servers that need access to this information to Exchange Server 5.5 SP2 or later.


Microsoft has confirmed that this is a problem in Microsoft Exchange 5.5.


Microsoft Exchange Server 5.5 Service Pack 3 (SP3) is now available. For best performance it is recommended that all of the computers that are running Exchange 5.5 and the Exchange Connectors that are installed on those computers are both running the same service pack.

NOTE: A separate service pack is required for the Exchange Connectors.

For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

242250 XFOR: Exchange Connectors Require a Separate Service Pack Installation

Additional query words: calendar, calcon, notes servpack 4.6.x r5 domino

Keywords: kbbug kbfix KB251475