Install a certificate that covers this hostname on Vercel
Why it matters
The certificate the server presents is issued for other names, so browsers show a name-mismatch warning and refuse to continue silently. This happens when the host was never added to the certificate, or when the server picks the wrong certificate for the name.
The fix
- Open the project's Settings then Domains and add this hostname. Vercel only issues a certificate for domains added to a project.
- Point the domain at Vercel using the DNS values it shows, then wait for the certificate to be issued.
Related
- Reported by the certificate chain and expiry check
- Renew the expired TLS certificate
- Fix a certificate that is not valid yet
- Renew the certificate before it expires
- Replace the self-signed certificate with a trusted one
- Use a certificate from a publicly trusted authority
- Serve the full certificate chain
- Replace the expired intermediate certificate
- Re-issue the certificate with a stronger key
- Replace the certificate that uses a broken hash
- Fix the certificate that browsers reject
Scan your domain to see whether this applies to you.