Websites Security certificate problems IE 11

  jonem81 16:47 03 Dec 2014

HP Pavilion with IE 11. Problem is not getting access to other websites due to " A problem with this website's security certificate. The security certificate presented by this website was not issued by a trusted certificate authority.........etc." Someone suggested my CMOS battery needs replacing, but the date and time on my clock is exactly the same as my radio wall clock. Any advice, please?

  Fruit Bat /\0/\ 17:58 03 Dec 2014
  jonem81 22:17 03 Dec 2014

Fruit Bat /\0/\ Thanks for your link, ( which worked!), but, having read the linked article, I don't know where to go from there. There was a mention of the battery, and indeed a description of my problem, but if there is a solution , have I missed it?

Thanks again for your help, as usual!

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