After Google launched their HTTPS ranking signal some savvy SEOs and webmasters noticed SSL errors spewing from Google.
Here are screen shots:
Now, I brought Google's John Mueller into the conversation on this at Twitter and he says the SSL certificates are indeed misconfigured. But the issue is, this is not always in the webmasters control.
First John said nothing changed with HTTPS around this, that the errors are not necessarily new:
But webmasters are being notified of errors in Webmaster Tools, here is one public screen shot from @SEO:
But the truth is, the site does respond with HTTPS but there is a mismatch error according to Qualys.
But the issue is, with shared hosts, CDNs and so on, the webmaster cannot always make the change and fix this issue themselves.
John does admit that Google can try to do a better job communicating that:
But I do not see any changes being made by Google or the webmasters at this point to address these concerns.
Forum discussion at Twitter.