Outlook 2013 SP1 required for M365 from November
From 01.11.2021, at least Outlook 2013 SP1 is required for Microsoft 365. Previously, older Outlook versions usually worked with Microsoft 365 without any problems. From 01.11.2021, however, Microsoft will now block Outlook versions older than 2013 SP1 from being used and block these versions. Here is the corresponding article from Micorsoft: New ... Read more