Why am I getting this error message that won't let me access my facebook page:www.facebook.com uses an invalid security certificate. The certificate is not trusted because no issuer chain was provided. (Error code: sec_error_unknown_issuer) I don't know what I did wrong for the error to suddenly appear?

A "certificate-error" occurs when you access a "secure-HTTP" site (one that uses the 'https://' prefix for the URL) and the "certificate" that the site is "secure" (namely that the site really is the site that it claims to be) is invalid. Certificates have a "start-date" and an "end-date" and certificates can be "revoked". If the certificate is for a different web-site ('web.site.com' versus 'www.site.com') or is revoked, or if the current date is not between the "start" and "end" date, you get the "certificate error" message.

What site did you try to access?

it means internet explorer does not trust the website because the security certificate is not recognized by IE. you can right click the content blocked and click the allow option on the drop down menu.

you accept the certificate please click on ok.
next process continue.

You need to run an anti-virus program. this is most commonly someone trying to get your password for face book using a Trojan of some sorts. looks like you been browser hijacked. AVG is the best free anti-virus software in my opinion. if you get any error trying to download it it is most certainly a virus. as most virus's prevent you from downloading software that will remove it.

Hi there,

You may want to check the date settings on your laptop. It should updated.

Hope this works!

you opt for get exemption by getting SSL certificate on the spot while showing error in web.. you may easily complete about these functions in Mozilla firfox!

If you are using Mozilla :
Click Tools > Options >Advanced > Encryption > View Certificates.

Delete Certificate related to Twitter and Click ok and close the boxes.
Download certificate the next time you are prompted to download.

hello, this is the problem with the SSL security certificate.. to solve this problem in firefox ... first when this error is displayed there wil be a link that says " add this certificate " , click that link and add the certificate to ur browser.. the problem will be solved ... or else go to internet options in ur browser and check for certificate settings .then download the certificate from google with the option given there....

Hello,

you can view this link, to get a better solution:


http://www.google.com/support/talkgadget/bin/topic.py?topic=15386


thank you,