Net::err_cert_common_name_invalid

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1

My domain is: mucit.kim

I ran this command: sudo certbot mucit.kim

It produced this output:NET::ERR_CERT_COMMON_NAME_INVALID

My web server is (include version): ubuntu 22

2

No, it didn't, and no, that isn't the command you ran. What's the exact command you did run, and what was its output?

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3

I see a redirection loop:

curl https://mucit.kim/
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>301 Moved Permanently</title>
</head><body>
<h1>Moved Permanently</h1>
<p>The document has moved <a href="https://mucit.kim/">here</a>.</p>
<hr>
<address>Apache/2.4.41 (Ubuntu) Server at mucit.kim Port 80</address>
</body></html>

This is good:

Requests to: http://mucit.kim/
Redirect to: https://mucit.kim/

This is a loop [NOT good]:

Requests to: https://mucit.kim/
Redirect to: https://mucit.kim/

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4

I was playing Cloudflare settings so the loop redireciton is about it.
I get NET::ERR_CERT_COMMON_NAME_INVALID error

5

I just write the code when I setup the SSL on my web server.

I get NET::ERR_CERT_COMMON_NAME_INVALID error on the browser. If you need I can send my apache conf files

6

That's because the cert being served ("www.mucit.kim") doesn't match the name being requested ("mucit.kim").

image
image404×515 10.8 KB

3 Likes
8

I fix it;
In my -le-ssl.conf file I add these lines:
Include /etc/letsencrypt/options-ssl-apache.conf
SSLCertificateFile /etc/letsencrypt/live/mucit.kim/fullchain.pem
SSLCertificateKeyFile /etc/letsencrypt/live/mucit.kim/privkey.pem

It solved.
Thanks

1 Like
9

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