When you share a Microsoft Copilot prompt that references OneDrive files, the following happens for the second user: 1. Prompt Delivery: The second user receives the text of the prompt in their Copilot interface, but they do not automatically see the original AI-generated response. 2. File Permissions Check: Copilot strictly respects Microsoft 365 permissions. If the second user does not already have access to those specific OneDrive files, Copilot will be unable to "read" them to execute the prompt. *-> 3. Execution Failure: If permissions are missing, the prompt will likely fail or return a generic answer because Copilot cannot ground its response in data the user is not authorized to see. Manual File Sharing Required: Sharing the prompt link does not automatically share the attached files. You must separately share the OneDrive files or the containing folder with the user for the prompt to work for them. Reference: https://support.microsoft.com/en-us/office/frequently-asked-questions-about-copilot-in-onedrive- 1bd55d10-7c46-417c-ab3d-e9c7be346947
