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Microsoft 365 Copilot

2 mentions in 7 days · 2 in 30 days · 2 total · first seen Sep 11, 2026 · last 23m ago

Timeline2 articles

Microsoft says Copilot buttons still missing in classic Outlooknew

Microsoft is still investigating a bug that makes Copilot buttons disappear in classic Outlook for affected M365 Copilot users.

Microsoft confirmed the missing Copilot and Copilot Chat buttons occur after upgrading classic Outlook for Windows to build 20026.20182 and higher, because Outlook cannot locate the MAPI property PR_PROFILE_USER_SMTP_EMAIL_ADDRESS_W. The issue affects Copilot Chat (Basic) and paid M365 Copilot (Premium) customers, and Copilot remains reachable via OWA, new Outlook, and the standalone app. A temporary workaround enables 'Show Apps in Outlook' under Advanced settings, and Microsoft also acknowledged Outlook crashes tied to Kaspersky's Mail Checker (mcou.dll).

BleepingComputer12:16 UTC · 23m agoAI industry 2 sources

Microsoft Investigating Microsoft 365 Copilot Access Issues Under Incident CP1470554

Microsoft is investigating a Microsoft 365 Copilot access disruption tracked as incident CP1470554, with no root cause or recovery timeline published.

Microsoft is investigating reports that users cannot open Microsoft 365 Copilot or encounter errors when interacting with it, tracked under Service Health incident CP1470554 in the Microsoft 365 admin center. The company has not disclosed a root cause, affected regions, or estimated recovery time. It follows several distinct Copilot availability failures between late August and September 10, including an authentication-configuration outage and a Copilot Chat configuration fault. Microsoft says the issue is not a breach or cyberattack and directs tenant admins to the Service Health Dashboard.

Cyber Security Newsupdated 12:16 UTC · 23m agofirst Sep 11, 07:34 UTC · 5d agoAI industry 2 sources1

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product Microsoft 365 Copilot 2 vendor Microsoft 2 organization Kaspersky 1 organization Microsoft 1 product Outlook 1

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