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Recieving 403 errors in firefox but nowhere else

Thomas Harris
Thomas Harris
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I often receive a 403 error when using Firefox Every time, before this happens, I get the unsafe website warning and then the 403 error when I continue anyway


I am using the latest version at the time of writing These errors only occur on my desktop PC I have tried to replicate this issue on both my phone (Android) and another laptop(Windows 11) but all the websites work normally on there.

I have tried the following, none of which have any effect:

  • Clearing cookies
  • using Troubleshoot mode
  • Restarting
  • Changing Useragent
  • Using "Forget about this site"

The following do fix the issue

  • Using a VPN
  • Using Google Chrome
  • Running Firefox in another profile

Going through the privacy and security tab and reseting all the settings sometimes works but only temporarily

The following are a few websites where the issue occurs

  1. https://kdice.com/
  2. https://latinitium.com/
  3. https://theysaidso.com/
  4. https://opensource.org/
  5. httpe://obsidian.rocks/
I often receive a 403 error when using Firefox Every time, before this happens, I get the unsafe website warning and then the 403 error when I continue anyway I am using the latest version at the time of writing These errors only occur on my desktop PC I have tried to replicate this issue on both my phone (Android) and another laptop(Windows 11) but all the websites work normally on there. I have tried the following, none of which have any effect: * Clearing cookies * using Troubleshoot mode * Restarting * Changing Useragent * Using "Forget about this site" The following do fix the issue * Using a VPN * Using Google Chrome * Running Firefox in another profile Going through the privacy and security tab and reseting all the settings sometimes works but only temporarily The following are a few websites where the issue occurs # https://kdice.com/ # https://latinitium.com/ # https://theysaidso.com/ # https://opensource.org/ # httpe://obsidian.rocks/
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Alla svar (3)

PavelkoT
PavelkoT
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Try Safe mode in Firefox. I guess an addon maybe a reason. Did you change options about about:config? There are countries where departments want to know more about citizens. Then there is no browser or addon issue here. Check your country for this.

Ändrad av PavelkoT

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Thomas Harris
Thomas Harris Frågans ägare
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Thanks for the suggestion! Just to clarify, Safe Mode is now called Troubleshoot Mode in Firefox, and as I mentioned earlier, it didn’t help with the issue.

The only changes I’ve made in about:config are to sidebar.revamp and sidebar.verticalTabs.

Also, I’m in the UK, so I don’t think it’s a monitoring issue. Although, the VPN I used was a US connection.

Appreciate the help—let me know if you have any other ideas!

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miagrayson44
miagrayson44
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That's odd! A 403 error typically means access is forbidden, but it might be a browser-specific issue if it's only happening in Firefox. Have you cleared your cache or checked any browser extensions that might be interfering? Adjusting security settings or turning off specific add-ons can help resolve it. Hopefully, it gets fixed soon!

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