Copilot
Microsoft to retire Microsoft 365 Companion apps in December
Microsoft announced that it will retire the Calendar, People, and Files Microsoft 365 companion apps on December 16 and urged admins to remove them from managed devices in their organization. This follows Microsoft’s October 2025 announcement that it will begin automatically installing them on all Windows 11 enterprise devices with the Microsoft 365 desktop client […]
Microsoft says Copilot buttons still missing in classic Outlook
Microsoft says it’s still investigating a known issue that causes the Copilot and Copilot Chat buttons in classic Outlook to disappear for some Windows users. As it acknowledged when it announced a fix via a service change in June, this affects only customers with the Copilot Chat (Basic) license or a paid M365 Copilot (Premium) […]
Microsoft fixes bug that removed Copilot buttons in Outlook
Microsoft has fixed a known issue causing the Copilot Chat or Copilot buttons in Classic Outlook to disappear for Windows users with the Copilot Chat (Basic) license. As the company explains in a recent support document, affected users may no longer see Copilot buttons on the side navigation and above the ribbon. Those affected may also […]
New attack turned Microsoft 365 Copilot into 1-click data theft tool
A critical vulnerability chain dubbed SearchLeak in Microsoft 365 Copilot Enterprise could allow attackers to steal sensitive data from a target’s mailbox, OneDrive, or SharePoint account through a specially crafted URL. The exfiltrated information could be email content (e.g., access codes, passwords), calendar events and meeting details, documents, and other content accessible through Copilot Enterprise […]
Microsoft now lets admins uninstall Copilot on enterprise devices
Microsoft says IT administrators can now uninstall the AI-powered Copilot digital assistant from enterprise devices using a new policy setting, which has become broadly available after the April 2026 Patch Tuesday. RemoveMicrosoftCopilotApp is available as a Policy CSP and Group Policy after deploying this month’s Windows security updates on endpoints managed via Microsoft Intune or System Center […]
Microsoft: March Windows updates break Teams, OneDrive sign-ins
Microsoft says the March Windows 11 update breaks sign-ins with Microsoft accounts across multiple Microsoft apps, including Teams and OneDrive. These sign-in issues appear after installing the KB5079473 cumulative update Microsoft released last week as part of this month’s Patch Tuesday, and, according to a Windows release health dashboard update published on Wednesday, will trigger warnings that […]
Microsoft stops force-installing the Microsoft 365 Copilot app
Microsoft has stopped automatically installing the Microsoft 365 Copilot app on Windows devices that have the Microsoft 365 desktop client apps. The Microsoft 365 Copilot app integrates the AI-powered Copilot assistant with Microsoft 365 suite apps, including Word, Excel, and PowerPoint, as well as other features like AI agents and Notebooks. The forced rollout began […]
Microsoft adds Copilot data controls to all storage locations
Microsoft is expanding data loss prevention (DLP) controls to block the Microsoft 365 Copilot AI assistant from processing confidential Word, Excel, and PowerPoint documents, regardless of their location. Currently, Microsoft Purview DLP policies apply only to files stored in SharePoint or OneDrive, but not to those stored on local devices. This change will be deployed through […]
Microsoft says bug causes Copilot to summarize confidential emails
Microsoft says a Microsoft 365 Copilot bug has been causing the AI assistant to summarize confidential emails since late January, bypassing data loss prevention (DLP) policies that organizations rely on to protect sensitive information. According to a service alert seen by GeekFeed, this bug (tracked under CW1226324 and first detected on January 21) affects the Copilot “work […]
Reprompt attack let hackers hijack Microsoft Copilot sessions
Researchers identified an attack method dubbed “Reprompt” that could allow attackers to infiltrate a user’s Microsoft Copilot session and issue commands to exfiltrate sensitive data. By hiding a malicious prompt inside a legitimate URL and bypassing Copilot’s protections, a hacker could maintain access to a victim’s LLM session after the user clicks on a single […]