I've now tested this on a standard esp32-wroom-32e dev board and it's still giving the error.

Either I'm doing something very wrong or the example or the https web server is very broken!
Anyone any ideas?

HI! I'm getting an issue with the https web server example at esp-idf/examples/protocols/https_server/simple. I'm running ESP-IDF 5.0 with an ESP32S3 target. The error is as: I (37771) esp_https_server: performing session handshake E (38501) esp-tls-mbedtls: mbedtls_ssl_handshake returned -0x7780 E ...