Microsoft is retiring Exchange Web Services (EWS), a legacy technology for accessing Glow email and calendar data, between October 2026 and April 2027. This change affects several email apps. Users should update their apps or consider switching to Outlook for continued access.

Microsoft will phase out OneView and TrueTime features in Outlook on the web between March and late June 2026, disabling the connection of personal email accounts. While no data will be deleted, users can still access multiple accounts through various browsers or Outlook for Windows/Mac.