Connection failed: If the problem persists, please check your intemet connection or VPN, or email us at hi@cursor.sh

I’m getting this all the time:

Using Sonnet 3.5
No VPN

I’m getting the same error too, however only in Edit (Ctrl+K), not in Chat (Ctrl+L).

This happens for all models.
I don’t use custom API_KEY.
I have a self-signed certificate. I installed Node Extra CA Certs VSCode, and set NODE_EXTRA_CA_CERTS, however it didn’t work.

Possibly related:

I just checked the link you mentioned, however it didn’t help.

Also I saw another bug report for the same issue 15 mins ago.