Old browsers (IE 6,7 Safari > 5, etc) won’t be able to use AMO secured pages after the latest update, as they don’t support TLS 1.1 or 1.2. These browsers are over 10 years old at this point and simply aren’t being updated anymore to support the latest Internet Security standards.IE 8, 9 and 10 do support TLS 1.1 and 1.2, but the ability isn’t enabled by default (versions 11 and 12 work fine out of the box) :Microsoft didn’t enable support for the new security standards in Internet Explorer by default – you have to enable the feature manually.

There are two paths you can take if you’re having issues:

  1. Use a different (current) browser to access the https pages (Firefox, Chrome, Safari)
  2. Turn on the new security settings in Internet Explorer.  Here’s how you do that:

Go to Tools -> Internet Options -> Advanced Tab -> Scroll down to the Security section 

Scroll down until you see Use TLS 1.0, TLS 1.1 and TLS 1.2, and make sure they are checked.  Hit the Apply button, and close the browser.  When you reopen Internet Explorer, everything should work.

Here’s the settings page:

These security standards are absolutely necessary for AMO to remain PCI Compliant.

Note, that all *current* browsers work with AMO, and it’s in your best interests to keep current with browser’s updates and remain secure online.