SSL certificate errors can occur for several reasons, including certificate expiration, domain mismatch, incomplete certificate chains or website configuration problems.
Common SSL errors
Certificate expired
An SSL certificate is valid only for a defined period.
If the certificate has expired, it must normally be renewed or replaced.
Domain name mismatch
The certificate must be valid for the domain being accessed.
For example, a certificate issued only for example.com may not automatically cover every other hostname unless those names are included in the certificate.
Certificate not trusted
A browser may report that a certificate is not trusted if:
- The certificate chain is incomplete.
- The certificate was issued by an untrusted authority.
- The server is not providing the required intermediate certificates.
Mixed content warning
A website may use HTTPS but still load some resources using HTTP.
Common examples include:
- Images
- JavaScript files
- Stylesheets
- Fonts
- Embedded content
Update the affected resource URLs to HTTPS where appropriate.
Certificate installed on the wrong service
Make sure the certificate is installed on the correct website, server, control panel or service.
DNS issues
The domain must point to the server where the SSL certificate is installed.
If DNS was recently changed, allow time for DNS propagation.
Browser or cache issues
In some cases, cached information can cause an old SSL warning to remain visible temporarily.
Try:
- Reloading the page
- Clearing browser cache
- Testing from another browser or device
Important
Do not ignore SSL warnings on production websites, especially if visitors are entering passwords, personal information or payment-related data.
Need assistance?
If you are unable to identify or fix an SSL certificate error, please contact our support team with the affected domain and the exact warning shown in the browser.
