MCP servers not working

[mihaimangu]

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

I’ve been trying to connect to any MCP server on cursor running on windows 11. Outside cursor, those MCP servers work. I do have node,npm and npx working inside the cursor terminal (powershell). I simple get “no tools or prompts” for every MCP server that I try. Any ideas?

Steps to Reproduce

Try any MCP server

Operating System

Windows 10/11

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.4.5 (user setup)
VSCode Version: 1.99.3
Commit: af58d92614edb1f72bdd756615d131bf8dfa5290
Date: 2025-08-13T02:08:56.371Z
Electron: 34.5.8
Chromium: 132.0.6834.210
Node.js: 20.19.1
V8: 13.2.152.41-electron.0
OS: Windows_NT x64 10.0.26100

Does this stop you from using Cursor

Sometimes - I can sometimes use Cursor

[deanrie]

Hey, thanks for the report. Could you try clearing the package cache:

%LocalAppData%/npm-cache/_npx

Then restart Cursor.

[mihaimangu]

I tried to do that but still nothing. It looks like it’s not connecting to any MCP at all but it hands for a couple of seconds before failing. I tried reinstalling cursor but with no luck.

[andrewh]

Tracking and sent to team

[msfeldstein]

Can you do View → Ouptut and see if the mcp logs show anything

[mihaimangu]

Thanks for the help. I browsed a couple of these tabs but I don’t see anything related to MCP.

[msfeldstein]

That’s … odd. How about Help → Toggle Developer tools, do you see anything in the console?

[mihaimangu]

Yes there are many errors in there but filtering for MCP does not show anything.