GoKawiilMicrosoft still hasn't fixed missing Copilot buttons in classic Outlook
Microsoft confirmed it is still investigating why Copilot and Copilot Chat buttons vanish from classic Outlook for Windows after upgrading to build 20026.20182 or later. The issue affects users with Copilot Chat Basic or M365 Copilot Premium licenses, blocking access to Copilot from the ribbon, app bar, or Add Apps menu.
GoKawiil's interpretation of the reporting above, not reported fact.
Copilot is central to Microsoft's push to embed AI across its productivity suite, so a persistent bug hiding its entry points undermines adoption among paying subscribers. Until a permanent patch ships, IT admins must rely on a manual workaround, adding friction for enterprise users already paying for premium AI features.
- The bug affects classic Outlook for Windows builds 20026.20182 and above.
- Microsoft traces the cause to a missing MAPI property preventing Copilot settings from persisting.
- A temporary fix involves enabling 'Show Apps in Outlook' under Advanced settings.
Source: bleepingcomputer.com, 2026-09-16
Published there as: “Microsoft says Copilot buttons still missing in classic Outlook”
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