If you click on a PayPal button and receive the Security Alert that
says "...The security certificate has expired or is not yet
valid..." it means that your browser software does not have the
latest information needed to read the security certificate.
PayPal's security certificate is valid through 2017.
Receiving this message does not affect the security -- you can still
use the PayPal buttons with confidence to securely donate, buy
merchandise or pay for
membership.
PayPal Technical Support recommends you take the following steps if
you receive this security alert:
If you are using Microsoft Internet Explorer and are receiving a
Security Alert stating that 'The certificate has expired or is
not yet valid' when attempting to access
https://www.paypal.com/, it is likely that your browser does
not have the newest root certificates installed and is using an
older version.
This issue can be resolved by following the steps below:
1. Please ensure that you are accessing PayPal directly at
https://www.paypal.com/ (rather than a Bookmark or Favorite)
This step does not apply to the PayPal buttons on our
website..
2. Ensure that your computer's date and time are correct by
clicking:
Start > Settings > Control Panel, and double-click 'Date/Time'
If you are still receiving this warning you will need to update
the browser's Trusted Root Certification Authorities certificate
store by following the steps below:
2. Click the YES button when asked to download Microsoft's
update package. Microsoft will create a customized update
package for your browser, which should include a CA Root update.
Typically this is found
under the heading Recommended Updates. If there are any issues
or questions with this page or these updates, please contact
Microsoft Support.
If this does not resolve your issue you may need to install the
newest root certificates from Verisign directly at
Lastly, if you are still receiving this warning, you should
consider upgrading to a newer version of your browser.
We appreciate your patience and understanding regarding this
matter, and wish you continued success on PayPal.
Sincerely,
PayPal Tech Support
PayPal, an eBay Company