Microsoft Learn MCP not working anymore

[DennisFranzmannGOB]

This mcp server worked well, untill around first of march. I reinstalled it from mcp browser in vs code but that did not change anything.

My configuration is :

"servers": {
        "microsoftdocs/mcp": {
            "type": "http",
            "url": "https://learn.microsoft.com/api/mcp",
        }
    }

after starting the server it returns an error:

2026-03-10 10:24:08.887 [info] Starting server microsoftdocs/mcp
2026-03-10 10:24:08.888 [info] Connection state: Starting
2026-03-10 10:24:08.888 [info] Starting server from LocalProcess extension host
2026-03-10 10:24:08.888 [info] Connection state: Running
2026-03-10 10:24:09.522 [info] Discovered 3 tools
2026-03-10 10:24:19.365 [info] Connection state: Error Error sending message to https://learn.microsoft.com/api/mcp: TypeError: fetch failed
2026-03-10 10:24:19.365 [error] Failed to set MCP server log level: Canceled: Canceled

VS Code info

Version: 1.111.0 (system setup)
Commit: ce099c1ed25d9eb3076c11e4a280f3eb52b4fbeb
Date: 2026-03-06T23:06:10Z
Electron: 39.6.0
ElectronBuildId: 13330601
Chromium: 142.0.7444.265
Node.js: 22.22.0
V8: 14.2.231.22-electron.0
OS: Windows_NT x64 10.0.26200

[pdebruin]

@TianqiZhang

[TianqiZhang]

@DennisFranzmannGOB thanks for reporting this issue! Have you tried connecting using MCP Inspector ?

Usually this kind of issue happens due to network proxy, testing using MCP inspector helps narrow down the problem.

[DennisFranzmannGOB]

@TianqiZhang
I didn't know about this tool, thank you for sharing it. But for this purpose i think i need a bit more guidance:.

I ran the tool. In the browser i entered:
"Transport: Streamable HTTP
Connection Type: Direct,
URL: https://learn.microsoft.com/api/mcp"

I hit connect and tried some tool calls. everything works fine. No output in the terminal but answers after the tool call.
I have no proxy configured.

[TianqiZhang]

@DennisFranzmannGOB we rolled out a change today that will reduce unnecessary requests from client to MCP server. Do you still experience the same issue?