Cursor 2.0.77 stuck loading tools http remote mcp server

[user1209 (Cursor58)]

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

cursor 2.0.77 stuck loading tools http remote mcp server

Steps to Reproduce

use remote https mcp server

Screenshots / Screen Recordings

Operating System

Linux

Current Cursor Version (Menu → About Cursor → Copy)

版本: 2.0.77
提交: 1.99.3
日期: ba90f2f88e4911312761abab9492c42442117cf0
Electron: 2025-11-13T23:10:43.113Z
ElectronBuildId: 37.7.0
Chromium: undefined
Node.js: 138.0.7204.251
V8: 22.20.0
OS: 13.8.258.32-electron.0

Does this stop you from using Cursor

Yes - Cursor is unusable

[deanrie]

Hey, thanks for the report. Cursor is incorrectly detecting the transport type for your remote MCP server, which causes URL protocol errors. This is a known bug that the team is already tracking.

Please try these workarounds:

Option 1: Change HTTP Compatibility Mode

• Settings > Network > HTTP Compatibility Mode → “HTTP/1.0”
• Restart Cursor

Option 2: Disable HTTP/2

• Settings > Network > Enable “Disable HTTP/2”
• Restart Cursor

Could you also share your MCP configuration? (from .cursor/mcp.json or ~/.cursor/mcp.json)

I just want to double-check that your URL format is correct.

Let me know if either workaround helps.

[user1209 (Cursor58)]

Changing the network didn’t work; my configuration is correct, and localhost works fine.Domain name cannot be used