Ran into this issue when launching Outlook 2010 after a USMT migration.

Cannot open your default e-mail folders. The attempt to logon to Microsoft Exchange has failed.

The scenario is a  Windows XP SP3 with Office 2003, to Windows 7 SP1 with Office 2010 RTM migration.

User State Migration Toolkit (USMT) 4.0 was used to copy the profile, this included the USMT update to support Office 2010 which can be downloaded here http://support.microsoft.com/kb/2023591

The profile and user settings had migrated successfully, however it appeared that the Outlook profile didn’t migrate.

This is a known issue and an Outlook hotfix is available from Microsoft at the following location.

http://support.microsoft.com/kb/2405793

Once the hotfix is installed the profile opens fine, and all settings are migrated.

This hotfix can be added directly into the task sequence, or into the Office package.

To add into the Office package extract the fix into the updates folder using the following command.

outlook2010-kb2405793-fullfile-x86-glb.exe /extract:c:<extractiondirectory>

Then copy the two files into the updates folder of the Office 2010 installation sources files

Once you deploy Office 2010 from the updated media, the update will be slipstreamed into the install.

John Riseam

System Center Consultant

Risual Ltd

Got home from work today and received an email that Office 2010 Beta is available for download from Connect, it is also available on my TechNet and MSDN accounts.

Now to uninstall the tech preview and see what’s new – hopefully things are a little more stable;)