Cox website not working with Windows Creator 1703--revisited

This topic was discussed previously at:

http://forums.cox.com/forum_home/internet_forum/f/5/t/17905.aspx

& although the gentleman involved was fortunate enough to solve this via a later update, such was not the case for me.

Actually, the later update made it worse, such that I was unable to sign in at all. Again, I found it necessary to roll back to a previous version of Windows. I run an Asus 555LAB laptop w/8gb RAM & a TB of hard drive space. I have Cox preferred internet. I have tried this w/various browsers, including Firefox, Chrome, & Edge. I have allowed popups, & permit 1st & 3rd party cookie tracking. I run Windows Defender & Windows Firewall, so nothing unusual there. Errors in the developer tools console include:

"Warning
Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user’s experience. For more help http://xhr.spec.whatwg.org/
dependencies.min.430b308b636435e474eac4bb57848c44.js:2987:8
Secure Connection Failed
The connection to the server was reset while the page was loading.
• The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
• Please contact the website owners to inform them of this problem.
Learn more…
https://www.cox.com/resaccount/sign-in.cox?onfailure=http%3A%2F%2Fwww.cox.com%2Fresaccount%2Farizona%2Fsign-in.cox&onsuccess=https%3A%2F%2Fwww.cox.com%2Fresaccount%2Fhome.cox%3Fautherror%3D2%26flr%3D4    t"

I hope somehow this can be fixed, as there will undoubtedly come a time when I will be forced to accept this update, & I am not anxious to be locked out of my Cox account. Any help appreciated. Thank you.

Jackie