Why am I being refused access to Yahoo because "Yahoo's security certificate has expired?"?

Question

Why am I being refused access to Yahoo because "Yahoo's security certificate has expired?"?

Answer 1

This is most commonly a side effect of your computer clock being incorrect.

Open up your clock settings (double click the clock in the Windows tray), and make sure the settings are correct (most importantly the year).

Good luck.

Answer 2

Because your computer has slipped the program. Click on "look at certificate" and check the box that says something like "always accept Yahoo".