Does UnitySync support Modern Auth on O365 connections? Created: 2022-07-14 11:12:22 Modified: 2023-08-29 16:31:26 Tags: Features Office 365 System Requirements UnitySync Yes. UnitySync v4.5.6 (or better) supports Modern Auth using the latest version of Powershell and Exchange On Line Module (EXO). Please see further O365 System Requirements for complete details.