Invalid security certificate

Hi All,

Today I open www.cadcrowd.com and the browser warn me about security certificate 


I open the site in three browsers (Firefox, Opera and Chrome) and they warn similar issue:

"This server could not prove that it is www.cadcrowd.com; its security certificate is not trusted by your computer's operating system. This may be caused by a misconfiguration or an attacker intercepting your connection."

Is there any server trouble? or only in my computer? 
how to solve it?

thanks 

Hi Akang,
 yes  ...I have the same problem!

Hey
It appeared to me too, were you at home when this happened ? I wasn't and didn't gave it much thought, sometimes yahoomail shows me the same ( whenever i remember to use it ;) ).

Hi Peter,
on my smartphone and also home ...

Hi all,

Indeed, the SSL certificate has expired and we're already working on updating the certificate.
The issue will be resolved within 24 hours.
Sorry for the inconvenience.

Oh, I see ... Okay
@Reda, @Peter
 We do not have to worry anymore :) 

I will only worry if will see this :)
Hope it will never come to happen!

The SSL issue is solved for the next 3 years :)

@Alexey,

You may want to inform everyone to clear their browser history and cache in order for these changes to be reflected. The browser will cache this info and users will still see the error until they clear cookies, history and cache. Just a suggestion :)

Thanks,

Marc

@marcpreston,

The catch is that even if I describe how to clear browser cache here, the ones who have outdated browsers and still see the old certificate, won't be able to read this anyway :)
But good news are that all modern browsers don't cache expired SSL certificates and there's no need to clear any cache or history.