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firefox ( and Chrome ) wont connect on Macos10.15.6 .

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  • 1 has this problem
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  • Last reply by FredMcD

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One of my computers a Mid 2014 MacBook Pro laptop runs Safari fine with MAcOS 10.15.6 , but since the update will no longer connect to Firefox or Chrome browsers.

A newer desktop iMac 2019 has completed the Update and has no problems running the most uptodate versions of Safari 13.1.2, Firefox 79.0 , or Chrome ( 84.0.4147.135 ). I tried re-installing the Firefox and Chrome programs , but no success.

Any suggestions on how to correct. Browser connectivity problem. (My network settings are identical on both computers )

One of my computers a Mid 2014 MacBook Pro laptop runs Safari fine with MAcOS 10.15.6 , but since the update will no longer connect to Firefox or Chrome browsers. A newer desktop iMac 2019 has completed the Update and has no problems running the most uptodate versions of Safari 13.1.2, Firefox 79.0 , or Chrome ( 84.0.4147.135 ). I tried re-installing the Firefox and Chrome programs , but no success. Any suggestions on how to correct. Browser connectivity problem. (My network settings are identical on both computers )

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Some problems occur when your Internet security program was set to trust the previous version of Firefox, but no longer recognizes your updated version as trusted. Now how to fix the problem: To allow Firefox to connect to the Internet again;

  • Make sure your Internet security software is up-to-date (i.e. you are running the latest version).
  • Remove Firefox from your program's list of trusted or recognized programs. For detailed instructions, see

Configure firewalls so that Firefox can access the Internet. {web link}