GoKawiilMicrosoft resolves recurring Copilot button bug in classic Outlook
Microsoft has patched an issue in the classic Outlook desktop client that caused Copilot Chat and Copilot buttons to disappear from the navigation pane and ribbon for some licensed users. The company traced the problem to Outlook failing to retrieve certain account information from users' profiles, and said the fix addresses that root cause. This marks the second time Microsoft has fixed the bug after it resurfaced following recent updates despite an earlier June patch.
GoKawiil's interpretation of the reporting above, not reported fact.
The repeated recurrence of this bug suggests Microsoft's Copilot integration in legacy Outlook remains fragile, potentially undermining confidence in the rollout of its paid AI features. Enterprise customers paying for Copilot Chat or Microsoft 365 Copilot licenses depend on consistent access, so repeated outages could prompt frustration even as alternative access points like Outlook on the web remain unaffected.
- Microsoft fixed a bug hiding Copilot buttons in classic Outlook for some Windows users.
- The issue stemmed from Outlook failing to retrieve account information from user profiles.
- This is the second fix for the bug, which resurfaced after an earlier June patch.
Source: bleepingcomputer.com, 2026-10-19
Published there as: “Microsoft fixes classic Outlook bug that hid Copilot buttons”
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