Context IQ will be retired in the new Outlook and Outlook on the web starting March 16, 2026, removing “/” suggestions for inserting files. Users can still attach files via paste, drag-and-drop, or Insert > Attach file. No admin action is needed; update training accordingly.
Applies to: Microsoft 365 for the web · Microsoft 365 apps
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).