Guys, I am having a major pain migrating a user within a Hybrid configuration between Exchange 2010 on premise and O365. I have migrated 300 users to date without issue and am left with this user.
I have troubleshot the error logs but no luck yet. One thing that jumps out at me from reading the logs is that the user has a whopping 1,477 folders. I would imagine this might be an issue, but wondering if there are limits or a history of very large folder structures causing issue.