Migrating content from Microsoft CMS 2002 (MCMS 2002) to SharePoint 2007 results in a "Attempted to read or write protected memory" error

I've been working on a case where we should migrate content from a Microsoft CMS 2002 (MCMS 2002) database to the new SharePoint 2007 solution. We quickly run into a severe an unrecoverable error, "Attempted to read or write protected memory", when the migration procedure in SharePoint where trying to export data from the CMS 2002 database.

Microsoft Support identified the error and came up with a work-around;
  • Set the UserSid column in the AEUser table in the CMS 2002 database to null
  • Run the migration proceudre from SharePoint Administration again.

It worked! Well done Microsoft.

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