The behavior of the EWSEnabled switch in Exchange Online is changing. Starting April 1, 2025, EWS will only be allowed if both the organization-level and user-level EWSEnabled flags are true. This change aims to improve policy enforcement consistency. Check the blog for more details: [The way to control EWS usage in Exchange Online is changing](https://aka.ms/EWSEnabledChange).
Applies to: Exchange Online
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).