GitHub adds enterprise default-model setting and MCP auto-start toggle to Copilot for JetBrains

GitHub has released an update to its Copilot plugin for JetBrains IDEs that gives organizations more say over which model a new conversation starts with, and gives users a switch to stop MCP servers launching on their own. The details come from GitHub's own changelog entry dated October 10, 2026.

What is new. According to GitHub, enterprise administrators can now use managed settings to choose any available Copilot agent model as the default for new conversations. GitHub says this preserves an explicit model picker choice, so a developer who selects a different model in the chat window can still do so. That makes it a starting point rather than a lock.

The second change is a new MCP setting. GitHub describes it as letting users disable automatic server startup for Copilot and Claude, which controls when configured tools become active. The changelog frames this as a startup-timing control. It does not say the setting is limited to administrators, and it does not describe it as an authorization or allowlist feature.

Smaller changes. Diagnostic intention menus gain a Fix action that opens inline chat and asks Copilot to repair the reported issue. GitHub says it uses agent mode when available and ask mode otherwise. The company also lists clearer signed-in account labels with a Switch Account action, chat messages grouped by turn with navigation between turns, and copy and edit actions on user messages. It also claims reliability fixes, with no measurements given.

A compatibility break. GitHub says it has ended support for JetBrains IDE 2025.1, so the plugin now requires IDE 2025.2 or later. Teams on the older release will need to upgrade their IDE before they can use the plugin.

What is confirmed and what is not. Everything here rests on one source, GitHub's own changelog. We searched for independent reporting of the same release and found only pages that restate or comment on that changelog, so none of it has been verified outside GitHub. The changelog does not name the plugin version, the Copilot plans that get managed default models, or how the MCP setting is configured. Those details remain unconfirmed.

Why it matters. As coding assistants take on agent work and connect to external tools through MCP, administrators are asking two practical questions: which model is used by default, and what runs automatically in a developer's IDE. This update gives partial answers to both for JetBrains users, though enforcement details are left to GitHub's documentation.

Revised 16 October 2026: Guth re-read the original sources and rewrote this article. Correction: the earlier version said the new MCP setting lets administrators disable automatic startup of the Copilot and Claude servers. The source says only that a new MCP setting lets users disable automatic server startup for Copilot and Claude, and does not describe it as an administrator control. The earlier version remains available as revision 1.