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How to Fix the Most Common Firefox Error?

“We’re having trouble finding that site”  have you seen this message on your Firefox browser and don’t know what’s wrong? Don’t worry this is a common Firefox error you can easily fix.

However, Mozilla Firefox is the greatest alternative to Google Chrome and it gets upgrades regularly, it still has some problems like our one today.

Well, let’s see how to fix “We’re having trouble finding that site” error on Firefox.

How to fix the most common Firefox error?

Before trying to solve the problem on Firefox, make sure it’s not a connection problem.

Open an alternative browser and try connecting. If the connection is ok, move to the next steps.

Clear Firefox’s caches

Cookies can, when piled up, cause issues within the browser. So you can clear all browser-stored files and try connecting again.

How to Fix the Most Common Firefox Error?
How to Fix the Most Common Firefox Error?
  • Press Ctrl + Shift + Delete to open the Clear browsing data dialog box.
  • Check all boxes and select “Everything” under the Time range.
  • Click “Clear Now”.

Note: this action will your passwords date, so don’t forget to back up it.

Disable Add-ons

Disabling Add-ons might help. This especially applies to proxy/VPN extensions which hide your IP address and replace it with the public one.

If you are using free proxy/VPN extensions, They have a low data limit or slow down the bandwidth substantially.

To disable Add-ons:

  • Open Firefox.
  • Click on the hamburger menu and expand Help.
  • Choose Restart with Add-ons disabled.
disable Add-ons
disable Add-ons
  • Click Restart.

  • Try accessing any sites and look for improvements.

And this is how to disable them for good:

  • Press Ctrl + Shift + A to open the Add-ons menu.
  • Disable every add-on individually and restart Firefox.

  • Look for changes.

Disable IPv6, Proxy, and DNS Prefetching

Mozilla Firefox works with the IPv6 rather than with the IPv4. If you’re for some reason sticking with the IPv4 protocol solely, we recommend disabling the IPv6 in Mozilla Firefox.

Here’s how to disable IPv6 in Mozilla Firefox:

  • Open Firefox.
  • Type about:config in the address bar and press Enter. Accept the risk.
  • Search for IPv6 in the search bar.
disable IPv6 in Mozilla Firefox- Firefox Error
disable IPv6 in Mozilla Firefox- Firefox Error
  • Right-click on network.dns.disableIPv6;false and click Toggle.

And this how to disable Proxy:

  • Click on the hamburger menu and open “Options”.

  • Scroll to the bottom and open “Settings” under the Network Proxy.

  • Select “No proxy” and click OK to confirm changes.

Finally, here’s how to disable the DNS Prefetching option:

  • Repeat the first 2 steps from the IPv6 instructions.
  • Right-click on the list and select New > Boolean from the contextual menu.

  • In the preference dialog box, type network.dns.disablePrefetch and press Enter.
  • Set the preference as True and restart Firefox.

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