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Inability to surf with Firefox on Ubuntu 20.04.3 LTS.

  • 4 replies
  • 1 has this problem
  • 18 views
  • Last reply by FredMcD

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Help please,

Firefox can't find websites on Ubuntu O/S. Yet when I use Tor browser on Ubuntu, I can surf. Firefox works fine on WIN 10 (Dual boot laptop).

ASUS VIVOBOOK 15 O/S: Ubuntu 20.04.3 LTS and WIN 10 CPU: AMD Ryzen™ 7 Mobile Processors with Radeon™ RX Vega 10 Graphics RAM: 12GB DDR4 - 2400 MHz Firefox: 94

ping tests failed nslookup google.ca failed

PC

Chosen solution

This could be a problem with the DNS server or by using a proxy or VPN that is not available.

You can use the DNS Lookup tool on the about:debugging about:networking page to test your current DNS service. You can possibly switch on DNS over HTTPS (1.1.1.1).


'(edited to link to the correct about:networking page)

Read this answer in context 👍 1

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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}

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Chosen Solution

This could be a problem with the DNS server or by using a proxy or VPN that is not available.

You can use the DNS Lookup tool on the about:debugging about:networking page to test your current DNS service. You can possibly switch on DNS over HTTPS (1.1.1.1).


'(edited to link to the correct about:networking page)

Modified by cor-el

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Thanks FredMcD and cor-el. I tried both resolutions to no avail. However, I have solved the problem myself. Thanks again:)

PC

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That was very good work. Well Done.

Please tell us how you fixed the problem as this can help others with similar problems. Then flag that post as Solved Problem

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