Where does the bug appear (feature/product)?
Cursor IDE
Describe the Bug
The AI agent (in Agent Mode or Composer) gets permanently stuck at the “Planning next moves” (or “Planning next actions”) stage, with the animation running forever, without proceeding, throwing an error, or completing the request. This happens on simple or complex prompts (e.g., “2+2” or code tasks like “generate a FastAPI endpoint”). No Request ID is generated because it never finishes – it just spins the loader indefinitely.
This started about 3 days ago and persists across all models tested . It’s not specific to one provider.
What I’ve Already Tried (without success):
Switched networks/internet (WiFi > 4G > Ethernet, DNS to 8.8.8.8).
Restarted the app, cleared cache (Settings > Advanced > Clear Cache), killed processes in task manager.
Reinstalled Cursor from scratch (uninstalled + fresh download).
Ran Network Diagnostics (Settings > Network): All OK (low ping, no connection/VPN errors).
Disabled Privacy Mode, switched models/providers multiple times.
Checked API/sub limits (Pro+ active, no rate limits hit).
No VPN, firewall temporarily disabled, OS updated.
This is killing my workflow – can’t code without the agent. Anyone else hitting this? Team, this seems like server overload or a bug in the planning logic? Please prioritize!
Steps to Reproduce
Open Cursor.
Go to Chat/Composer/Agent Mode.
Type any prompt (e.g., “Explain how an inclined plane works in Physics”).
Submit – the agent shows “Planning next moves” and animates, but hangs forever (tested for >10min).
Try canceling/restarting: It sometimes responds once, but hangs again on the next prompt.
Operating System
Windows 10/11
Current Cursor Version (Menu → About Cursor → Copy)
VS Code Version: 1.105.1
Commit: 6042bed27e57543e04a8dc53c4e5be260
Date: 2025-11-27T03:49:28Z (6 hrs ago)
Chromium: 137.0.7204.251
Node.js: 22.20.0
V8: 13.8.258.32-electron.0
OS: Windows_NT x64 10.0.26100
Version: 2.139 (system setup)
VSCode Version: 1.105.1
For AI issues: which model did you use?
All models doesn’t work.
Does this stop you from using Cursor
Yes - Cursor is unusable