New Copilot button in file previewer for OneDrive and SharePoint

A new Copilot button will appear in the bottom-right corner of the OneDrive and SharePoint file previewer, replacing the command bar button. It offers Copilot chat and contextual prompts, is enabled by default, requires no admin changes, and will roll out from mid-November to December 2025. We’ve added a new Copilot button that gives users a quick and visible entry point to Copilot directly within the file previewer in OneDrive and SharePoint. This button appears near the bottom-right corner of the file previewer (instead of in the command bar) and surfaces contextual prompts for Copilot-supported file types. It also provides access to the Copilot chat. This message is associated with Roadmap ID 513432. When this will happen: General Availability (Worldwide, GCC, GCC High, and DoD): We will begin rolling out mid-November 2025 and expect to complete by December 2025. How this affects your organization: Who is affected: Users in GCC, GCC High, and DoD environments who preview files in OneDrive or SharePoint. What will happen: What you can do to prepare: No action is required at this time. Communicate this change to helpdesk or support staff. Update internal documentation to reflect the new location of the Copilot button. Compliance considerations: No compliance considerations identified, review as appropriate for your organization. A new Copilot button will appear in the bottom-right corner of the file previewer. View image in new tab This button provides access to Copilot chat and contextual prompts based on the file type. The previous Copilot command in the command bar will be removed. No changes to admin policies or settings are required. The feature is enabled by default. Message ID: MC1182707

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