Random SSL errors on all browsers and platforms

One of my websites (pc-builder.net) is having this issue for some of the customers. On Chrome it shows up as ERR_SSL_PROTOCOL_ERROR, and on Firefox it’s SSL_ERROR_RX_RECORD_TOO_LONG. I can’t reproduce the error locally but for some people it’s very consistent.
One weird thing is that, if they use a VPN, the error goes away for some reason. It seems like a problem with Cloudflare, please take a look into this!


The error is showing up in CURL as “connection reset by peer” well which means that it’s not a problem with browsers. And this is happening even after I moved the site to a different account, so, it’s not because of a configuration error as well.

Your site is generally loading fine → sitemeer.com/#https://pc-builder.net

The error message you get would indicate you either have an issue with your local PoP or - more likely - your ISP is doing something they shouldn’t.

What’s the output when you append /cdn-cgi/trace to your domain?

The problem is that this is happening over multiple ISP’s, multiple devices, multiple countries and browsers. Here is the output for /cdn-cgi/trace

ip= {redacted}
uag=Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:95.0) Gecko/20100101 Firefox/95.0

If I do curl "https://pc-builder.net/" it works ~50% of the time. The other 50%, it throws an error

I am afraid I can’t reproduce that. It’s consistently loading fine with the test posted earlier.

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