I have been using Duckduckgo for about a year. Yesterday, I began receiving an Untrusted Connection Warning when trying to access the site. There is no allowance for an exception. The only thing that I know has changed was the Avast database update yesterday. I have not received any other warnings associated with the Duckduckgo website, but I did receive warnings from Avast such as "Avast Web Shield has blocked access to this page because the following certificate is invalid: sni67555.cloudflaressl.com" and other similar warnings for other pages when I was searching the web for an answer to the problem. I did reinstall two DigiCert certificates ("Secure Server CA" and "Global Root CA") as suggested for a similar problem that was addressed on the duck.co forum. That did not fix it. In the meantime, I also updated my OpenSSL installation to the latest version which I had no reason to believe was the problem. I'm still getting the "Untrusted Connection" warning. Any suggestions?
I'm using....
Firefox 40.0.3
Windows XP SP3