Aug 19 2018 01:27 PM - edited Aug 19 2018 01:28 PM
If you use Active Directory Federation Services (ADFS) with #Office365 (or anything else), you need to download and install a patch to fix a security hole with MFA. See https://office365foritpros.com/2018/08/19/adfs-patch-available/ for details.
Aug 19 2018 02:28 PM