Mailbox migration failed By Dataprise | October 4, 2016 | Comments Off on Mailbox migration failed Issue When migrating users to Office 365 I’ve encountered two errors with the same fix. I wanted to share that fix with all of you. NOTE: This is not just for O365 migrations, this could also apply to on-prem mailbox moves. The value below has changed over the years with Server OS and patch levels.… Read More