← cd ~/deadlines
// deadlines · Exchange Online
EWS disabled by defaultExchange Online · October 2026
Microsoft switches the tenant-level EWSEnabled setting to off, blocking Exchange Web Services for tenants that have not explicitly opted in.
In short: this took effect on October 2026 (Microsoft gives this as an approximate date). This date has passed.
What to do
- Read the official notice: Microsoft source ↗.
- Add every Microsoft deadline to your calendar: subscribe to the deadlines calendar.
Other upcoming Exchange Online deadlines
Sources