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I am told “Your connection is not private” & the web site is blocked.

  • Mac OS 10.11.6 (El Capitan)

    Version:78.0.4093.231 (x86_64)

    https://mail.protonmail.com/login

    There are suddenly numerous sites which I cannot load, including sites I visit frequently.
    With some, I cannot gain access at all.
    406084b4-4793-4bc2-ada5-5156c719a239-image.png

    With others, if I click on “help me understand” I am given the option of proceeding to that site even though the browser deems it unsafe.
    We recently switched ISP’s from AT&T to Xfinity (Comcast). This problem did not manifest right after the switch, but shortly thereafter.
    If I am not given the option in “help me understand” of going to that site, I simply cannot get on. Period. And this includes a few essential web sites.
    Can anyone help me?

  • @bobamamda-0 Check the news on September 30 and October 1st. A major certificate has expired and was/is causing issues in many OSs and sites.

    Make sure your OS is up to date.

  • @leocg
    Thank you for your response.

    https://www.checkadblocker.com/blog/companies-face-issues-as-lets-encrypt-root-certificate-expires/

    'In his blog post, he lists clients that will break after the IdenTrust DST Root CA X3 expires. These include versions of macOS older than 10.12.1, Windows versions older than XP Service Pack 3, iOS versions older than iOS 10, OpenSSL versions less than and including 1.0.2, and Firefox versions older than 50.”

    I use Mac OS 10.11.6
    I wonder what I will lose updating to 10.12.1