I'm using an older Mac running 10.11.6. Today I started having a problem with a bunch of sites (including these forums, wikipedia and many others) where I would get a "Not Secure" error
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NET::ERR_CERT_DATE_INVALID
I'm pretty sure the problem is linked to this certificate "DST Root CA X3" which looks to have expired this morning
I already made sure my computer had the latest update (for my OS) and restarted it.
Anyone have any ideas how to fix this?