Simplified ribbon option vanishes from Classic Outlook on Windows
Users running Outlook Classic for Windows version 2605 Build 16.0.20026.20076 report the simplified ribbon toggle is gone. One person restored the option after a full restart. No official Microsoft statement has appeared. The change affects anyone who had switched to the compact ribbon to reduce screen clutter. Reports surfaced on 1 June 2026 in a Microsoft community thread. The thread contains only user observations. No workaround beyond restarting the computer is documented.
Before this update, many users kept Classic Outlook precisely because they could shrink the ribbon and keep the interface stable while they built daily habits around flags, rules, and search. The ribbon setting had become part of that trusted layout. Now the same users face another small break in muscle memory. Each time Microsoft removes a toggle, the cost of staying with Classic Outlook rises and the argument for moving core triage into durable, non-visual features becomes stronger.
Analysis
Treat the ribbon as cosmetic and stop anchoring any part of your email system to it. Spend the next hour moving your most-used actions into rules and Quick Steps so the next interface change cannot touch them.
Source note
Pulse published by Collab365 Spaces. Cite as "Simplified ribbon option vanishes from Classic Outlook on Windows", Collab365 Spaces. 1 source referenced.