Issue
From time to time we see a user with "migration canceled" or "migration failed".
Log closed normally, migration summary is there but it looks like it has some problems at a certain point of the folder structure.
What can I do to fully migrate the mailbox?
What is missing?
Solution
Since the migration is failing in the folder structure, make sure all folders have a proper name, and are not blank.
Notice the log has the following folder with no name.
Folder '', 0 documents
Open the user's mail file in Domino Designer, and either delete the blank name folder, or give it a unique name.
