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Firefox/Windows10 intermittently not resolving URLs (lost connection, no internet)

I am not sure if it is a problem with Firefox, Sophos antivirus, and NextDNS or what.
But when I have NextDNS enabled, the issue exists.
It started about a month ago.
It specifically affects gmail, google voice, google docs, youtube, nextdns.io and more.
While having the issue, everything works fine in a private tab within firefox with all the extensions enabled. Chrome/Edge also work fine - maybe because I do not have NextDNS setup on them?
https://www.reddit.com/r/firefox/comments/u9ett8/gmail_youtube_urls_not_resolving_stall_and_when/i6f7jlo/?context=3

3 replies

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    • Ruby_Balloon
    • 2 yrs ago
    • Reported - view

    How do you have NextDNS configured? (Windows App, Native DOH setup in Firefox, etc)

    If you're using Native DOH within the Firefox Browser then you have to make sure you have the TTR mode set to 3

    Why is mode 3 required on Firefox? - Getting Started - NextDNS Help Center

      • Don_Clark
      • 2 yrs ago
      • Reported - view

      Greg B.  - Thank you for your response! I am using NextDNS within the Firefox DNS settings. Per your instructions, I did change TTR from 2 to 3. I will report back whether this solves the issue or not.

      • Don_Clark
      • 2 yrs ago
      • Reported - view

      Greg B. - Its still not working correctly. I get timeouts(not connected notifications) in gmail, and I often cannot resolve the https://www.youtube.com URL (and more issues):

      Secure Connection Failed

      An error occurred during a connection to www.youtube.com. SSL peer reports incorrect Message Authentication Code.

      Error code: SSL_ERROR_BAD_MAC_ALERT

          The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
          Please contact the website owners to inform them of this problem.
       

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Content aside

  • 2 yrs agoLast active
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