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Fix #100: Cannot use Microsoft Learn MCP anymore (reason: Eclipsed) #144

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Merged
Pieter de Bruin (pdebruin) merged 3 commits into from
Sep 2, 2026
Merged

Fix #100: Cannot use Microsoft Learn MCP anymore (reason: Eclipsed) #144

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c467894
Document VS 2022 'Eclipsed' MCP server error in troubleshooting
JiwaniZakir Apr 3, 2026
d560e7a
Merge remote-tracking branch 'origin/main' into fix/100-cannot-use-mi…
pdebruin Sep 2, 2026
027c0f4
Clarify that Eclipsed matches on MCP server name
pdebruin Sep 2, 2026
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1 change: 1 addition & 0 deletions README.md
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Expand Up @@ -212,6 +212,7 @@ When handling questions around how to work with native Microsoft technologies, s
| No results returned | Try rephrasing your query with more specific technical terms |
| Tool not appearing in VS Code | Restart VS Code or check that the MCP extension is properly installed |
| HTTP status 405 | Method not allowed happens when a browser tries to connect to the endpoint. Try using the MCP Server through VS Code GitHub Copilot or [MCP Inspector](https://modelcontextprotocol.io/docs/tools/inspector) instead. |
| MCP server 'Microsoft Learn' marked as unavailable in Visual Studio (Reason: Eclipsed) | Visual Studio 2022 (17.13+) ships "Microsoft Learn" as a built-in MCP server at a higher-priority scope. "Eclipsed" means a higher-priority definition already exists and the duplicate lower-priority entry is suppressed. Remove any manually added `microsoft-learn` entry from your `~/.mcp.json` or workspace `.mcp.json` to avoid conflicts. The built-in server will then become active automatically. No additional configuration is required for Visual Studio users. |

Copilot AI Apr 3, 2026

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The guidance to remove a microsoft-learn entry may not match what users actually have in their config: in the linked issue log the user-defined server is named/displayed as “Microsoft Learn”, not microsoft-learn. To make the troubleshooting step actionable, consider wording it as removing any manually added server entry that points to https://learn.microsoft.com/api/mcp (regardless of the configured name), or explicitly mention common names like microsoft-learn / “Microsoft Learn”.

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| MCP server 'Microsoft Learn' marked as unavailable in Visual Studio (Reason: Eclipsed) | Visual Studio 2022 (17.13+) ships "Microsoft Learn" as a built-in MCP server at a higher-priority scope. "Eclipsed" means a higher-priority definition already exists and the duplicate lower-priority entry is suppressed. Remove any manually added `microsoft-learn` entry from your `~/.mcp.json` or workspace `.mcp.json` to avoid conflicts. The built-in server will then become active automatically. No additional configuration is required for Visual Studio users. |
| MCP server 'Microsoft Learn' marked as unavailable in Visual Studio (Reason: Eclipsed) | Visual Studio 2022 (17.13+) ships "Microsoft Learn" as a built-in MCP server at a higher-priority scope. "Eclipsed" means a higher-priority definition already exists and the duplicate lower-priority entry is suppressed. Remove any manually added server entry from your `~/.mcp.json` or workspace `.mcp.json` that points to `https://learn.microsoft.com/api/mcp` (commonly named `microsoft-learn` or displayed as "Microsoft Learn") to avoid conflicts. The built-in server will then become active automatically. No additional configuration is required for Visual Studio users. |

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@TianqiZhang Tianqi Zhang (TianqiZhang) Apr 8, 2026

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Thank you Zakir Jiwani (@JiwaniZakir) for contributing your finding to this repo. Could you help confirm if the conflict is due to the name microsoft-learn or the url https://learn.microsoft.com/api/mcp like Copilot suggested here?


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