Cursor Chat/agent/plan are not working. when i send a message it shows planning next steps for a few seconds and stops. The message returns to the chat text area as if i never sent the message
Steps to Reproduce
Open the chat and send a message
Expected Behavior
To get a response
Operating System
Linux
Current Cursor Version (Menu → About Cursor → Copy)
Hey, thanks for the report - the screenshot shows that the API/Chat/Agent connection fails due to a certificate chain error. This looks like SSL certificate inspection, possibly from security software or a network configuration.
Please try:
Check security software: do you have firewall, or network monitoring software enabled? If yes, temporarily disable SSL scanning/inspection
Try the stable build: you’re on nightly (2.1.0-pre.25). Download the stable release from Download · Cursor and check if the issue persists
Check VPN/proxy: if you’re using a VPN or a corporate proxy with SSL inspection, try disabling it
Get the Request ID: send a message in chat, then copy the Request ID
Importantly, the “circular structure issuerCertificate” error suggests something is intercepting or modifying SSL certificates during the connection, creating an invalid chain that the diagnostic tool can’t serialize.
