Win7 browser sercurity certificates?

[ponder]

When going to any https site in IE or Chrome you get a servers sercurity certificate is no longer valid.

What is the cause of this?

Win7 64-bit and MSE installed. It's a relatively fresh install.

 

[Random717]

Are all updates installed? Windows 7 should update root certificates automatically, but sometimes doesn't, so there are issues occasionally where legit sites stop working.
edit: Happens mostly behind proxies, not sure what environment you're running this in?

 

[ponder]

Thanks, no worries. I see the CMOS clock is sitting on 2005, the month/day & time is however correct

Will get them to change it on next reboot and the problem should go away.