Q: Error Msg to Update Safari but I have the latest installed.

From your Safari menu bar click Safari > Preferences then select the Privacy tab then click:   Remove All Website Data

Then quit and relaunch Safari and try the Chase website.

Same Issue I've updated my system and still getting the same error message. Has anyone been able to successfully get onto the website after doing the above

I've had the same problem today. I contacted Chase who were very unhelpful. Their first support contact stated several times, even after checking with someone else, that Safari is not a supported browser. I politely directed them to their own system requirements website that states that Safari 7.1 and later are supported. They then tried to transfer me to their IT support group but they wouldn't accept the call transfer and sent the original support person back to me saying it is Apple's problem. It's possible there is some problem on Apple's side but I'm not having the issue on another bank site and Chase could have been more helpful in any event.

Here are some options:

1. Install Firefox and use it instead of Safari to access the Chase site: https://www.mozilla.org/en-US/firefox/new/

or

2. Open Safari and go to Preferences on the menu named Safari, then click Advanced in the bar across the top of the Preferences window, then put a check mark in front of "Show Develop menu in menu bar." The click the Develop menu and change "User Agent" to Safari 9.1.1 instead of "Default (Automatically Chosen)"

After doing that Safari did work with Chase.

this didn't work