Microsoft 365

“Copilot” is not one product. Microsoft uses the name for its general-purpose assistant, Microsoft 365 features, and GitHub’s coding assistant. Other companies also use “copilot” as a generic term for an AI helper. That makes it easy to install the wrong app, sign in with the wrong account, or pay for a subscription that does not include the feature you expected. Quick answer Use the free Microsoft Copilot app or website for general questions, web research, and everyday writing; use Microsoft 365 Copilot when you want AI grounded in eligible Office documents, email, meetings, and work data; and use GitHub Copilot for code completion and coding chat inside supported developer tools. The phone app and web app are ways to access Copilot, not separate AI products. VS Code, Visual Studio, and current SSMS Copilot integrations are GitHub Copilot. Compare the exact task, account, data protections, usage limits, and license before paying. ...

I encountered error 4294967295 when installing Microsoft 365 with winget. The installer downloaded successfully and its hash was verified, but the Microsoft Office Click-to-Run installer failed when the package installation started. This error is confusing because winget appears to work correctly until the final installer step. The package is found, the download completes, and the installer is verified. The failure comes from the Office installer or an existing Office installation rather than from the basic winget search operation. ...