How come I get “the security certificate presented by this website has expired or is not valid”?

by on November 8, 2011

Q: I recently had a new hard drive and a new full version of windows 7 home premium installed in my computer. ever since then most internet sites I go to that I have never had problems with before now give a message saying, “the security certificate presented by this website has expired or is not valid”. Some sites I can not log into including my bank account and I can not download from most sites. how can I get my computer to recolonize these security certificates?


One Response to “How come I get “the security certificate presented by this website has expired or is not valid”?”
  1.  
    Picked as best answer

    1. Make sure Windows is fully up-to date
    2. Run a full Spyware/Malware scan. If you don’t have any security software installed, get Microsoft Security Essentials (free) from Microsoft
    3. Try a different browser such as Google Chrome and see if you have the same issue.

    4. If you’re getting expired or not valid messages from security certificates, NEVER input any personal information to the site.

    When you get that error message in your browser, there should be an option somewhere to show details of the certificate and what the problem actually is.

    Try going to this site: https://www.google.com/
    If you get a warning or error, post the full details here.