Website Certificate Warnings and Form Submission

I have an older iMac Mid 2011 i7, 3.4Ghz running OS X 10.11.6. I'm starting to notice certificate warnings pop up that I have to manually trust/accept when going to websites I've been to before. Also, when trying submit a customer support form on one of my vendor websites, I enter the security validation code that was required (I'm not a robot) and get a message that says ""unable to find api/0/contact". I'm wondering if OS X El Capitan is the issue. I use this computer for mainly music recording and cannot upgrade any further because of the recording software I'm running. In Keychain I tried to change the vendor's certificate to "trust", but it still won't let me submit the form. Any help would be appreciated!

iMac 27″, 10.11

Posted on Jul 30, 2023 2:10 PM

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2 replies

Urquhart1244

Level 10

147,500 points

Jul 31, 2023 4:55 PM in response to dmrslr1984

It is unfortunate, but a growing number of websites have started using newer web technology (without fallback options), that Safari 11.1.2 (2018) doesn’t support, including some things security related. The price of progress seems to be that non-adapting ‘old timers’ fall behind. The truth is that no web dev is checking their site in Safari 11.

The current version of Safari (16.x) requires macOS 11 Big Sur or later.

The current version of Chrome (115) requires macOS 10.13 High Sierra or later.

The current version of Firefox (115) requires macOS 10.12 Sierra or later, and future versions will require 10.15 or later.

Older versions of browsers may not support newer web features, and may also lack in the security department.

If you need El Capitan for your workflow, then consider a separate more modern machine or device for web access.

dmrslr1984 Author

Level 1

4 points

Aug 1, 2023 7:16 AM in response to Urquhart1244

Thanks for the response! I thought the issue could be related to something like that. Oh well, off to the Apple Store!

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Website Certificate Warnings and Form Submission