Cannot open certain sites that i was able to previously on mac desktop

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Level 1

8 points

Cannot open certain sites that i was able to previously on mac desktop

How do i fix issue with not being able to open certain websites that i was able to before? I've tried everything including erasing everything back to factory settings and still cannot open certain sites like quora.com ......which i can open in other devices like iphone. Am i the only one with this problem? Please help.....i have older mac desktop with yosemite 10.10 os if that means anything.......

iMac 27″, OS X 10.11

Posted on Oct 25, 2021 6:23 AM

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Answer 1

Best reply

den.thed

Level 9

77,488 points

Oct 26, 2021 9:16 AM in response to myipod182

You're welcome.

Why did you reset it back to the factory macOS?

Generally there is no reason to do that, unless you are selling, giving away or recycling the iMac.

The Safari web browser version is determined by the macOS version.

Those old macOS/Safari versions are no longer secure and you need to upgrade to the latest version for your iMac.

The latest macOS version for your Late 2013 27" iMac is Catalina 10.15 which includes Safari 15.

To get the latest secure macOS and Safari versions, click on >>>> macOS Catalina 10.15 <<<< and follow the instructions.

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Answer 2

myipod182 Author

Level 1

8 points

Oct 26, 2021 8:47 AM in response to den.thed

Thanks for the reply......i have the 27 inch imac desktop from late 2013. I am not good with computers at all but somehow was able to set up and was working great till recently. About a year ago i was successful in upgrading from yosemite to el capitan which took me all day to figure out. Now after erasing everything to factory settings i'm back to yosemite but almost every website gets flagged with not secure warning....really frustrating

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Answer 3

Allan Jones

Level 9

69,026 points

Oct 26, 2021 9:01 AM in response to myipod182

...almost every website gets flagged with not secure warning....really frustrating

If you are running macOs 10.11 as shown in your profile, there is the problem. Pretty much all the reports here of seeing that advisory are from people running macOS 10.11 El Capitan or older. Here's why.

A major supplier of browser security certificates has allowed some of its certs to expire. This primarily affects old OS versions with outdated browsers. Here is that supplier's statement on the subject:

https://letsencrypt.org/docs/dst-root-ca-x3-expiration-september-2021/

Older devices and/or their OS versions cannot support technologies that the cert's replacement uses. To get a newer version of Safari usually requires upgrading to a newer macOS version. Your 2013 iMac can run up to mac OS 10,15 Catalina.

However, something to try first: If you are seeing that advisory in Safari, try FireFox. I'm been told by trusted sources that FireFox handles certs differently from other browsers and sites with the expired cert may still work.

So it is either try FireFox, which for now still supports El Capitan or, if you iMac supports it, upgrade to a newer macOS version. Based on the narrative you have kindly provided about your previous updating grief, I suspect that FireFox is your better option until they drop suppor tof macOS 10.11.

https://www.mozilla.org/en-US/firefox/new/

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