We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Este fío arquivouse. Faga unha nova pregunta se precisa axuda.

Reason: CORS request not http, can't bypass with file_unique_origin - Firefox 89

  • 1 resposta
  • 1 has this problem
  • 5 views
  • Last reply by Hagay

vallamost
vallamost
more options

I am trying to do some local web development, if I open an index file directly in Firefox it complains that the CORS request is not being made over HTTP. I know I can try and set up a local web server for development but that's beside the point.

According to this previous Mozilla post linked below I can set privacy.file_unique_origin to false, and it's suppose to override the security setting. This does not work for me, setting it to false and closing all browsers and testing the HTML file again, I still see the CORS error. Is this setting now useless in the newest version of Firefox? Is there a different config setting I need to adjust?

https://support.mozilla.org/en-US/questions/1264280

I am trying to do some local web development, if I open an index file directly in Firefox it complains that the CORS request is not being made over HTTP. I know I can try and set up a local web server for development but that's beside the point. According to this previous Mozilla post linked below I can set privacy.file_unique_origin to false, and it's suppose to override the security setting. This does not work for me, setting it to false and closing all browsers and testing the HTML file again, I still see the CORS error. Is this setting now useless in the newest version of Firefox? Is there a different config setting I need to adjust? https://support.mozilla.org/en-US/questions/1264280

vallamost modificouno o

All Replies (1)

Hagay
Hagay
more options

Except for setting privacy.file_unique_origin to false, also set security.fileuri.strict_origin_policy to false. Sometimes you need also network.auth.subresource-img-cross-origin-http-auth-allow set to true ;-)

Hagay modificouno o