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# SSL wrong version number: the Port That Was Never 443
- URL: https://debugly.dev/ssl-wrong-version-number-https-to-http-port/
- Published: 2026-09-03T03:30:00.000Z
- Updated: 2026-10-17T05:49:04.000Z
- Description: This error almost never means your certificate is broken. It means one side is speaking TLS and the other is answering in plaintext, and the mismatch shows…
- Author: Rohit Bhadani
- Tags: Error Autopsy, Networking, Debugging

| Bytes             | Client reads as        | Actual content |
| ----------------- | ---------------------- | -------------- |
| 48 54 54 50       | record header          | HTTP           |
| content type 0x48 | not a valid TLS type   | the letter H   |
| version 0x54 0x50 | protocol version 84.80 | the letters TP |

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Published on [debugly.dev](https://debugly.dev/) by [Rohit Bhadani](https://debugly.dev/about/) | Founder of [Krova Cloud](https://krova.cloud/?ref=debugly.dev)