error: 406 firefoc cannot open a site that edge can

Ηι raninvan

This could be happening for various reasons, primarily for security purposes. However, you need to provide more details about the issue, such as which page you are trying to access and what error message you see and someone will certainly be able to help you.

https://politicallyspeaking.freeforums.net/

The server at politicallyspeaking.freeforums.net sent back an error: 406 Not Acceptable

Ηι raninvan This could be happening for various reasons, primarily for security purposes. However, you need to provide more details about the issue, such as which page you are trying to access and what error message you see and someone will certainly be able to help you.

The server at politicallyspeaking.freeforums.net sent back an error: 406 Not Acceptable

Hi raninvan,

The website opens normally on Firefox on my end, which means Firefox itself is compatible. The error maybe caused by a broken cookie, cache, or an extension.

You can try to:

Clear cookies and cache for that site: Many site issues can be caused by corrupt cookies or cache. In order to try to fix these problems, the first step is to clear both cookies and the cache. Note: This will temporarily log you out of all sites you're logged in to. While on the page showing the error, click the Shied icon on the left of the address bar. Click Clear cookies and site data… and confirm by clicking Remove. Refresh the page.

Test in Troubleshoot Mode: Try Firefox Troubleshoot Mode to see if the problem goes away. Firefox Troubleshoot Mode (previously known as Firefox Safe Mode) is a special diagnostic mode that temporarily turns off hardware acceleration, disables add-ons (extensions and themes) and resets some settings. See the Use Troubleshoot Mode in Firefox article for details. Click the Menu button (☰) > Help and Report > Troubleshoot Mode… and click Restart. Try loading the site again. If it works, one of your extensions is triggering the block.

Let us know if either of these solves it for you!

More info Delete browsing, search and download history on Firefox Use Troubleshoot Mode in Firefox

Hi raninvan, The website opens normally on Firefox on my end, which means Firefox itself is compatible. The error maybe caused by a broken cookie, cache, or an extension. You can try to: Clear cookies and cache for that site: Many site issues can be caused by corrupt cookies or cache. In order to try to fix these problems, the first step is to clear both cookies and the cache. Note: This will temporarily log you out of all sites you're logged in to. While on the page showing the error, click the Shied icon on the left of the address bar. Click Clear cookies and site data… and confirm by clicking Remove. Refresh the page. Test in Troubleshoot Mode: Try Firefox Troubleshoot Mode to see if the problem goes away. Firefox Troubleshoot Mode (previously known as Firefox Safe Mode) is a special diagnostic mode that temporarily turns off hardware acceleration, disables add-ons (extensions and themes) and resets some settings. See the Use Troubleshoot Mode in Firefox article for details. Click the Menu button (☰) > Help and Report > Troubleshoot Mode… and click Restart. Try loading the site again. If it works, one of your extensions is triggering the block. Let us know if either of these solves it for you! More info Delete browsing, search and download history on Firefox Use Troubleshoot Mode in Firefox

Those were the first things I tried, unfortunately that didn't work. Everything that runs of my router with firefox seems to be blocked. When my phone is using wifi, firefox cannot open it, but when using data it can. Edge can open it no problem on the same PC plugged into my router. I can open it on my PC with firefox using a VPN.

Is Firefox's built-in VPN enabled?

• Check the toolbar next to the address bar for the VPN icon. If it is turned on, click it and toggle it Off for freeforums.net (or turn it off completely to test).

Is there a second VPN active on your PC?

• Try disabling any background VPN client completely.

Disable DNS over HTTPS (DoH)

• Go to Settings > Privacy & Security.
• Scroll down to DNS over HTTPS.
• Select Off (temporarily, to test).
• Restart Firefox and reload the page.

More info: Firefox DNS over HTTPS, Configure DNS over HTTPS protection levels in Firefox