Setting up BitTitan to migrate mailboxes from O365 to another O365 tenant fails source authentication with the error: “Your migration failed while checking source credentials. The request failed. The remote server returned an error: (401) Unauthorized.”
November 17, 2022
It has been a while since I’ve been involved with Office 365 mail migrations but I was recently contacted by a colleague who was setting up BitTitan’s MigrationWiz for a migration and could not figure out why he was not able to authenticate so I
