Cert Free Exchange Add-on for Office 365 Migration › FORUMS › Support › Cert This topic has 0 replies, 1 voice, and was last updated 6 years ago by arik@new-xp.co.il. Viewing 1 post (of 1 total) Author Posts September 5, 2018 at 7:07 am #479 arik@new-xp.co.ilParticipant hi do i need a valid 3rd’ party cert in order to do the migrate ? Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In