“Taking longer than expected” After First Prompt

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I have a very similar (but even more severe) bug: it hangs right from the very first message in any new chat (not just after the first prompt).

Quick summary:

  • Any request (even a simple “hello”) → immediately shows “Taking longer than expected…” with endless spinner (5–10+ minutes, never completes).

  • Restarting Cursor / full PC reboot / clearing cache / switching models (tried all: Claude, GPT-4o, o1, Gemini) / VPN / new empty project — nothing helps.

  • 100% reproducible from the first message in a fresh chat.

  • Makes Cursor completely unusable for chat / agent / composer.

My separate thread with full details + screenshot:
https://forum.cursor.com/t/taking-longer-than-expected/152616

In that thread I selected in the poll: Yes - Cursor is unusable

Additional info:

  • Cursor Version: 2.5.20 (Stable) Commit: 511523af765daeb1fa69500ab0df5b6524424610 Date: 2026-02-19T20:41:31.942Z Electron: 39.4.0 OS: Windows_NT x64 10.0.19045 (Windows 10/11)

  • Default model: Same behavior across all (Anthropic, OpenAI, Gemini).