Switching a mailbox fails with: CSession::Logon| Number: -2147467259 - Unspecified error (4344670)

Switching a mailbox fails with: CSession::Logon| Number: -2147467259 - Unspecified error

When trying to switch a mailbox manually it fails. EMWMigration.log doesn’t provide any information, and even with extended logging enabled for MBREDIR the information is scarce and the error just says:

10/11/2011 4:00:50 PM MMExCore|Quest.MigrationManager.Exchange.Informer.informer_WriteLogInfo Message: Severity: 5| Source: CaeMAPISession::Logon| Number: 0 - Trying to synchronize MAPI profile creation. |External source: aeEMWGUIForms.CMBRedir.Log event
10/11/2011 4:00:50 PM MMExCore|Quest.MigrationManager.Exchange.Informer.informer_WriteLogError Error: 0 - (Source: CSession::Logon| Number: -2147467259 - Unspecified error File: 'aeMAPIProfile.cpp' Line: '130' | Source: aeEMWGUIForms.CMBRedir.Log event)
10/11/2011 4:00:50 PM MMExCore|Quest.MigrationManager.Exchange.Informer.informer_WriteLogInfo Message: Error: Cannot switch mailbox '/o=Correo Cerveza/ou=OC Administrative Group/cn=Recipients/cn=DummySINC18'. Result: -2147467259. Last error: 0. |External source: aeEMWGUIForms.CMBRedir.Switch
10/11/2011 4:00:50 PM MMExCore|Quest.MigrationManager.Exchange.Informer.informer_WriteLogInfo Message: One or several mailboxes were not switched due to errors. See the log file for details. |External source: EMWCon.CModMisc.MsgBoxEx

MAPI CDO on the console got corrupted and the tool cannot work and cannot make any MAPI calls.

Another possibility is - the tool was upgraded, but latest MAPI CDO was not installed and the outdated version is still in use.

Please install or reinstall the latest MAPI CDO by uninstalling it (using Add/Remove programs), rebooting the console and then installing the latest MAPI CDO, which can be downloaded from MS website.
 

Where to acquire the CDO Libraries (all versions) http://support.microsoft.com/kb/171440Excerpt Excerpt from the QMM User Guide: Quest Migration Manager requires version 6.5.8190.0 or later of Microsoft Exchange Server MAPI Client and Collaboration Data Objects 1.2.1 to be installed on the computers where Migration Manager agents will run (that is, Exchange 2007 and 2010 Servers and agent hosts) and on the computer where the Migration Manager console will be installed. The MAPI CDO setup package is not available for distribution; for details about obtaining it, please see Microsoft Knowledge Base article 171440.