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unable to connect error on mac os sonoma

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Hello, Installed latest Firefox browser on a 2020 Mac Mini M1 running latest version of Sonoma. Firefox will not connect to internet. Error is "Unable to Connect". This happens on all websites.

Brave browser connects as to other applications.

Thanks for any help.

--Bill

Hello, Installed latest Firefox browser on a 2020 Mac Mini M1 running latest version of Sonoma. Firefox will not connect to internet. Error is "Unable to Connect". This happens on all websites. Brave browser connects as to other applications. Thanks for any help. --Bill

Chosen solution

You can check the connection settings in case you use a Proxy or VPN service.

  • Settings -> General -> Network: Connection -> Settings

If you do not need to use a Proxy to connect to internet, select "No Proxy" if "Use the system proxy settings" or one of the others do not work properly.

See "Firefox connection settings":

You can check the DNS over HTTPS settings and try one of the others.

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Chosen Solution

You can check the connection settings in case you use a Proxy or VPN service.

  • Settings -> General -> Network: Connection -> Settings

If you do not need to use a Proxy to connect to internet, select "No Proxy" if "Use the system proxy settings" or one of the others do not work properly.

See "Firefox connection settings":

You can check the DNS over HTTPS settings and try one of the others.

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Thank you.

I selected "No Proxy" but no difference.

Then I disabled all the Firefox Add-ons. Problem solved!

I don't know which Add-on caused the problem. Will investigate that next as time allows.

Thank you again for helping.