Microsoft has an update on Exchange Online Basic Auth removal for Office 365 June 14, 2025 by admin Tweet Microsoft has an update for Office 365/Microsoft 365 Exchange Online Basic Auth retirement in the case of SMTP. Read more… Neowin Related Posts:With Basic Auth in Exchange Online dead, this is…Microsoft is killing off Basic Auth in Exchange…Microsoft will disable Basic Auth for Exchange…Microsoft gives final warning about Basic Auth…Microsoft announces it will soon update its Exchange…