Chat doesn't respond after fresh installation

[Ahpuch]

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

fresh installation of latest version (from cursor.com) : chat doesn’t respond.
3 blinking / moving dots and i’m back in the editor mode with my question.

Steps to Reproduce

happens every time, also after several restarts of cursor ide

Expected Behavior

i was expecting an answer

Operating System

Windows 10/11

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.7.52 (system setup)
VSCode Version: 1.99.3
Commit: 9675251a06b1314d50ff34b0cbe5109b78f848c0
Date: 2025-10-17T01:41:03.967Z
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 10.0.20348

For AI issues: which model did you use?

tested with auto-mode and also with the main models like gpt-5, claude sonnet 4.5, etc.

Does this stop you from using Cursor

Yes - Cursor is unusable

[deanrie]

Hey, thanks for the report. This issue can have several causes. Let’s diagnose:

Please check the following:

1. Network diagnostics: Go to Cursor Settings → Network → Run Diagnostics and share the results.

2. Large files in context: Do you have any large log files or big/open files? Remove large files from the workspace and try again.

3. MCP servers: If you have MCP servers enabled, disable them temporarily and test the agent’s behavior.

4. Developer Console: Open Help > Toggle Developer Tools, go to the Console tab, send a chat message, and share any red errors you see.

Let me know what you find.

[Ahpuch]

Hey deanrie, thx for helping!

1: see screenshot:

2: no large files

3: no mcp connections, fresh installation

4: see txt file

vscode-app-1760945950863.txt (13,9 KB)

[deanrie]

Thanks for the details, it looks like SSL inspection on your network is intercepting Cursor’s encrypted traffic. That breaks the HTTP/2 connections needed for chat.

Fix:

• Press Ctrl + , → search “HTTP/2” → turn on “Disable HTTP/2”. This forces HTTP/1.1, which works better with SSL‑inspecting proxies.

Are you on a corporate or institutional network? Let me know if disabling HTTP/2 fixes it.

[Ahpuch]

Thanks deanrie,

disabling http/2 fixes it, i get answers from chat now!