SSL certificate problem with www subdomain on custom domain


My site is, and I am having DNS/SSL certificate problems.
My custom domain is with a www subdomain.

The SSL certificate I have is valid for all the domains apart from the www subdomain, which I have changed to be my primary domain as recommended. I have tried renewing the certificate following

, but I get the following error

Renew certificate with Let’s Encrypt

DNS verification failed

We can’t provision a certificate until your DNS configuration is pointing at the Netlify servers and the changes have propagated.

If you’ve already changed your DNS configuration, allow up to 24 hours for the changes to be processed, or check our troubleshooting guide for some tips on what might be happening.

This is despite the domain appearing as fine in the domain settings.

Can the certificate be reviewed before the expiry date?

Hi, @RoryPotter. You have added the Netlify DNS name servers to the existing name servers at your registrar:	172800	IN	NS	172800	IN	NS	172800	IN	NS	172800	IN	NS	172800	IN	NS	172800	IN	NS

That is not a supported configuration. You must replace the name servers completely. Above you have both the and name servers together at the same time. It must be one or the other, not both.

The instructions for the two types of DNS configuration are:

I don’t see an Netlify DNS zone for this domain. I would recommend removing the name servers above and using the external DNS instructions.

If there are any questions about how to do so, please let us know.

1 Like

Thank you! I removed the nsone records, and it looks to have all been fixed!

Thanks for letting us know it’s been fixed. Have a great day!