M365 Copilotfor VS Code

Download the pack

Direct downloads of the M365 Copilot VS Code extension, the Chrome, Edge and Firefox extension and the Tampermonkey userscript, from the latest GitHub release.

1

VS Code extension

Adds the @m365 chat participant, the models, the editor actions and the commit tools.

Install from Marketplace Download .vsix

Or paste this in VS Code (Ctrl+P):

ext install m365-copilot-vscode.m365-copilot-vscode
2

Browser extension

Captures your Copilot session token and keeps it renewed in VS Code. Recommended.

Chrome Edge Firefox

Chrome and Edge: unzip and load unpacked. Firefox: open the file.

Userscript (alternative)

The same capture as a Tampermonkey or Violentmonkey script, for browsers where you cannot load extensions.

Install the userscript

All releases · Changelog

What you need

  • VS Code 1.104 or later
  • A Microsoft 365 account with a Copilot licence
  • Chrome, Edge or Firefox 128+ (or Tampermonkey)

Installing the browser extension

The browser extension is not in the browser stores: you load the file from the release. It takes a minute.

Chrome

  1. Unzip m365-copilot-vscode-extension-chrome.zip into a folder you will keep (the browser reads it from there).
  2. Open chrome://extensions and turn on Developer mode.
  3. Click Load unpacked and choose that folder.

Edge

Same as Chrome, with m365-copilot-vscode-extension-edge.zip and edge://extensions.

Firefox

  • Permanent: open the signed .xpi file in Firefox (or drag it onto about:addons). When a release has no .xpi the Firefox button gives you the .zip instead.
  • Temporary, no signature needed: about:debugging → This Firefox → Load Temporary Add-on and choose the .zip (no need to unzip it). Firefox removes it when it closes.
  • Developer Edition, Nightly or ESR: set xpinstall.signatures.required to false in about:config, then about:addons → ⚙ → Install Add-on From File.

Firefox 128 or later.

Installing the VS Code extension from a file

Open the Extensions view in VS Code, click the … menu and choose Install from VSIX…. Or from a terminal: code --install-extension m365-copilot-vscode-X.Y.Z.vsix.

Then connect

Open Microsoft 365 Copilot and send a message. The browser extension’s popup turns green and VS Code has your token.

Read the guide