Certificates Expired


I have just restored a Dell Laptop wich user windows 8.
now every time I open internet explorer is says: Certificate Expired. The security certificate presented by this website has expired or is not yet valid. ( I was trying to open Yahoo.com

how can I fix this problem please

I tried to install Chome and it cant open any page it says : your connection in not private ?
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JohnBusiness Consultant (Owner)Commented:
Have you updated to Windows 8.1 and done all updates. Certificates for Windows should come along with updates.
Mohammed KhawajaManager - Infrastructure:  Information TechnologyCommented:
Have you checked the date on your computer.  Let's say that Yahoo's certificate expires in July 2016 and if your computer date is set to February 2017 then you will get expired certificate error on websites where the expiration date is older than your computer date.

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ItaliabellaAuthor Commented:
Guys with this laptop I hit the top of my stupidity. :) Yes Mohammed you are right. I was waiting I google it and I found out as you mentioned that the wrong date may cause certificates error.

I fix it thank you very much to both of you, also thank you for your prompted response
JohnBusiness Consultant (Owner)Commented:
Thank for the update and I was happy to help.
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