s expecting does not match the hostname in the certificate then this will cause verification to fail.</p>

</dd>
<dt id="Expired-certificate">Expired certificate</dt>
<dd>

<p>The date that the server&#39;s certificate is valid to has passed.</p>

</dd>
</dl>

<p>The &quot;unable to get local issuer certificate&quot; we saw in the example above means that we have been unable to find the issuer of the server&#39;s certificate (or one of its intermediate CA certificates) in our trusted certificate store (e.g.