SSL cert doesn't exist for subdomains. Root site works correctly

[synapse709 (Titus Decali)]

I am having an SSL cert issue when accessing subdomains of kmpfr.co.
www.kmpfr.co works, but I get cert issues when accessing subdomains such as demo.kmpfr.co.

Please let me know exactly what I have to do to solve the SSL issue.

NOTE: I have a ‘rewrites’ in Vercel.json, but your AI seems to think it isn’t the issue:

  "rewrites": [
    {
      "source": "/widget",
      "destination": "/api/widget"
    }
  ],

Domains
(this did not show invalid configuration previously… not sure what changed)

When I click the “Enable Vercel DNS” button, I see

Thanks!

• T

[system]

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.

Troubleshooting domains

You can also use v0 to narrow down the possibilities.

[swarnava (Swarnava Sengupta)]

Hi,

I don’t see demo.kmpfr.co is added to any project. Can you add it and let me know if you are still facing issue?

Note that adding *.example.com on project doesn’t mean it will be accessible using any-subdomain.example.com. You need to expilictly add the domain in the project, or specific deployment using alias.

[synapse709 (Titus Decali)]

I have a multi-tenancy app, so I need to SSL support for ANY subdomain.

I’ve changed some DNS/NS records on my registrar and will await propogation and reply back with the results.

[synapse709 (Titus Decali)]

I changed my DNS/NS settings in my registrar (Porkbun) and it seems to be working now.
FYI to others:

I removed all CNAME and A address records in my DNS settings. Here is my current config:

I then replaced my Nameservers with the following:

ns1.vercel-dns.com
ns2.vercel-dns.com

I then double checked that I had added the domains kmpfr.co and *.kmpfr.co in my Vercel Domains page.

After waiting a day for propogation, this seemed to solve the issue.