-- Thanks so much, Ronni, I'm not exactly sure what happened, but I followed your instructions till I got somehow to SSL Certificate Checker at https://www.digicert.com/help/ and when I typed in "google.com" it came back with a clear certificate, and then Google worked OK. Same for Apple and Youtube.
-- I'm forever in awe with how you solve these problems! Sorry I mistakenly said my OS was El Capitan, I am on Sierra 10.12.1. I did click "Software Update" on "About this Mac" and it reported "No updates available", so maybe you have a later version from another source. All the very best, David. On 19 December 2016 at 15:03, Ronni Brown <ro...@mac.com> wrote: > Hi David, > You mentioned below you are running 10.12.1 El Capitan… 10.12.1 is macOS > Sierra 10.12.1 & now has update 10.12.2 > > Make sure all your Browsers are current latest versions. > > Also check Keychain Access for any ‘Expired Certificates’! Especially look > for the one I mention below. > > • On your Mac computer, at the top right, click Spotlight search [image: > Search]. > • Enter "Keychain Access." > • In the results, click Keychain Access. > • At the top of your computer screen, click View [image: and then] Show > Expired Certificates. > • At the top right, click Search [image: Search]. > • Type "DigiCert High" and press Enter on your keyboard. > • Find "DigiCert High Assurance EV Root CA" that is marked as Expired [image: > Expired]. Click the certificate. > • Delete by pressing Delete on your keyboard > > Cheers, > Ronni > > *13-inch MacBook Air (April 2014)* > 1.7GHz Dual-Core Intel Core i7, Turbo Boost to 3.3GHz > 8GB 1600MHz LPDDR3 SDRAM > 512GB PCIe-based Flash Storage > > macOS Sierra 10.12.2 > > > On 19 Dec. 2016, at 2:25 pm, David Noel <lis...@aoi.com.au> wrote: > > Hi Ronni, no, I have no security-type software. Anything else, such as > a work-around? > > Cheers, David. > > On 19 December 2016 at 14:10, Ronda Brown <ro...@mac.com> wrote: > > Are you using Kaspersky security software or Avast or some such software? > > > Sent from Ronni's iPad4 > > > On 19 Dec. 2016, at 1:58 pm, David Noel <lis...@aoi.com.au> wrote: > > I have a new iMac which I use for most purposes, running 10.12.1 El > Capitan. Since I upgraded from 10.11, I've had occasional problems > where my browsers can't access Google and Apple's own sites. > > Error message from Chrome on accessing gmail: > > "this site can't provide a secure connection, mail.google.com doesn't > adhere to security standards". > > Error message from Firefox on accessing Apple: > > The owner of support.apple.com has configured their website improperly > to protect your information from being stolen, Firefox has not > connected to this website". > > Safari did not produce an error message, but seemed unable to load > certain sites. > > In the past, I've been able to clear this problem by Restarting, but > this hasn't worked today. Has anyone any ideas on this matter? > > It's inconceivable that Google and Apple have the faults indicated. As > I'm unable to access gmail, I'm sending this from my older machine > still on 10.6.8 -- this does not have the above problem. > > Thanks and Merry Christmas -- > > David Noel > > > > > > -- The WA Macintosh User Group Mailing List -- > Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> > Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> > Settings & Unsubscribe - <http://lists.wamug.org.au/ > listinfo/wamug.org.au-wamug> >
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