Why Copilot Cannot Read My SharePoint File Despite Permissions

You have full permissions to a SharePoint file, but Copilot refuses to read it. This problem usually occurs because Copilot relies on additional data access settings beyond standard file permissions. The cause is often a missing search index, a blocked Graph API connection, or a restrictive data source policy in the Microsoft 365 admin center. … Read more

How to Fix GitHub Copilot 401 Authentication Error in VS Code

You open Visual Studio Code and see a red error banner: “GitHub Copilot: Request failed with status code 401.” This means Copilot cannot verify your identity with GitHub servers. The 401 error appears when your authentication token is expired, missing, or revoked. This article explains why the error occurs and provides step-by-step fixes to restore … Read more

Copilot Chat History Disappears After Browser Refresh: Fix

You open Copilot in Microsoft Edge, have a productive conversation, then refresh the browser tab. The entire chat history is gone. This problem affects users who rely on Copilot for research, drafting, or troubleshooting across multiple sessions. The root cause is a browser storage setting that deletes site data when the tab closes or refreshes. … Read more