Cursor Composer Stuck on 'Verifying': The 2026 Fix
The 'Verifying solution' hang is the new 'Blue Screen of Death' for AI engineers. Here is the definitive guide to unblocking Cursor Composer.
You've written the perfect prompt, hit Enter, and... wait. And wait. The "Verifying solution" spinner spins forever. This is the most reported Cursor bug of Q1 2026.
The HTTP/2 Conflict
Often, this is a network layer issue. Corporate VPNs and strict firewalls hate the long-lived HTTP/2 streams that Cursor uses for streaming diffs.
Fix: Go to Cursor Settings > Network and toggle "HTTP Compatibility Mode" to HTTP/1.1. It's slower, but it's bulletproof.
The Context Overload
If your Composer session has been running for 4 hours, the hidden context cache might be corrupted or simply too full for the "Verification" model (which is often a smaller, faster model) to handle.
Fix: Copy your prompt, hit Cmd+Shift+N (New Composer Session), and paste. It almost always works instantly. Treat Composer sessions as disposable.
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