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websites are plain text not HTML

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  • 8 have this problem
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  • Last reply by cor-el

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I've been having a lot of issues lately with Firefox. I get nothing but plain text websites, it's always asking for the certificates even though it's added them. I've been an avid firefox user for years since my son said it's the best browser out there. Now I'm beginning to wonder.. I've cleared the cache, uninstalled, reinstalled a clean version and still same problems over and over.

Please help.

I've been having a lot of issues lately with Firefox. I get nothing but plain text websites, it's always asking for the certificates even though it's added them. I've been an avid firefox user for years since my son said it's the best browser out there. Now I'm beginning to wonder.. I've cleared the cache, uninstalled, reinstalled a clean version and still same problems over and over. Please help.

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Can you attach a screenshot?

Use a compressed image type like PNG or JPG to save the screenshot.


Note that some firewalls monitor secure (https) connections and send their own certificate instead of the website's certificate.

  • ESET Setup -> Advanced setup -> Web and email -> Protocol filtering -> SSL
  • Certificates: Add the root certificate to known browsers

See also:

  • SSL protocol: Do not scan SSL protocol

Check the date and time in the clock on your computer: (double) click the clock icon on the Windows Taskbar.

Check the connection settings.

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

See "Firefox connection settings":