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# Err_ssl_protocol_error

43 views · 0 likes · 3 posts


Waseem Akram (@evildevill) · 2025-09-27

hey guys I recently purchased a domain via Vercel and configured a CNAME record for `auth.*****.dev`, pointing it to `us.kinde.com`. The DNS record has propagated correctly and is verified on Kinde’s end.

However, when attempting to visit `auth.*****.dev`, I receive the following error:

```
This site can’t provide a secure connection  
auth.*****.dev sent an invalid response.  

ERR_SSL_PROTOCOL_ERROR
```

**Troubleshooting Performed:**

* Confirmed CNAME record:

```
auth.*****.dev. 60 IN CNAME us.kinde.com.
```

* Checked CAA records → None directly set on my domain; inherits from `kinde.com`.
* Verified `_acme-challenge` TXT records are being managed by Kinde.
* Waited for propagation (issue persists).


system (@system) · 2025-09-27

The domain troubleshooting guide can help with most custom domain configuration issues. You might be able to use that guide to solve it before a human is available to help you. Then you can come back here and share the answer for [bonus points](https://community.vercel.com/t/introducing-the-vercel-leaderboard/1358).

https://vercel.com/docs/projects/domains/troubleshooting

You can also use [v0](https://v0.dev/) to narrow down the possibilities.


Waseem Akram (@evildevill) · 2025-09-27

i already checked this but still nothing found usefull