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Cursor: Connection failed. Check your internet connection or VPN

Exact error

Connection failed. If the problem persists, please check your internet connection or VPN

What it means

Cursor's client could not reach its AI backend for a chat/agent request.

Likely causes

• Network drop, corporate proxy or VPN blocking or inspecting traffic.
• A temporary Cursor service incident.
• HTTP/2 being blocked by a proxy.

How to fix it

1. Check the Cursor status page for incidents.

2. Try without the VPN/proxy, or on another network.

3. If you are behind a corporate proxy, try Cursor's setting to disable HTTP/2 (search "HTTP/2" in Cursor Settings) and restart.

Related errors

• Cursor: model is overloaded / slow requests