Not-made subdomains give me a Your connection is not private error

[pawlean (Pauline P. Narvas)]

Jumping in here to also share some related discussions with solutions, in case it’s helpful:

Handshake_failure

Hi, @yehorvoronov! The “Your connection is not private” warning and the specific error messages you’re encountering, such as handshake_failure, are related to SSL/TLS (Secure Sockets Layer/Transport Layer Security) configurations on your server. These issues typically arise when there is a mismatch between the TLS protocols and cipher suites supported by your server and those supported by the older browsers and devices. Is your DNS with Vercel? Sharing some related documentation that might be…

"Connection not secure, Certificate signed by untrusted issuer" being displayed to certain users

Hii, The user is using Google Chrome Version 103.0.506 in a 2008 iMac with OS X El Capitan. I see that the certificate is not compatible with these user specifications. I’m assuming that to fix this I would have to upgrade the plan and add my own certificate? Also for the school network problem blocking the site, is this a common problem for Vercel deployments?