Firefox Support Forum

Hello everyone,

I'm currently consuming APIs hosted on an external server using Java( or any other server side language), and everything works smoothly. However, when attempting to consume the same APIs in JavaScript, I encounter the 'Access-Control-Allow-Origin' error.

After some research, I discovered that browsers implement security checks leading to this issue. Can anyone advise on how to disable these security checks or resolve this issue when accessing the website in the Firefox browser? Any insights would be greatly appreciated. Thanks in advance!

Hi jscher2000, I want to thank you for your advice concerning a problem I had downloading Firefox to my Windows 10 laptop. I tried to follow your advice but was not successful. In the end, I googled "what if Firefox doesn't install". It took me to a website, https://www.makeuseof.com/fix-firefox-not-installing-windows , which took me to an article entitled "8 Fixes to Try if Firefox Won't Install on Windows". I tried #1 and #2 without success. #3, Temporarily Disable Your Antivirus Software, worked. Firefox is up and running. Feel free to share this with anyone who has a similar problem. No guarantee that it will work, but its worth a try. Again, thank you. drzee1946

Hi all.

My sync is only sometimes working. I notice that when saving a bookmark and trying to find it on another device. I sometimes have to manually resync it or wait for a few days to get it shown on my other devices. Same with the tab sharing across devices.. In most cases it doesn't work at all..

Here is a current sync-log: https://pastebin.com/TWugtAbm

Is there a way to set the default view and sorting for file upload folder?

The default for me is, detailed view and sorted by date.

I wanted to change it to large icon and sort by name, so it's easier to upload images. but I have to change the setting for every individual folder, is there a way to just set it as default?

I use Firefox version 103, the old version that is perfectly compatible with an extension I always use. I love this old version, and I don't want to update it to the new version. But the update reminder pops up many times everyday. it's so annoying. I used "about config" to turn it off (see photo 2); it works a bit, but the popup still there once daily after the configuration. I want to turn it off permanently. Is there any way to do it? Thank you very much!!

Suddenly on my PC the icon of Firefox turned white on both desktop and taskbar. And whenever I try to open Firefox, it says, "The file or directory is corrupted and unreadable." And I didn't make any changes myself. So far it was fine. Now what can/should I do?

I need to delete my husband's firefox account from my computer without deleting it on his computer altogether. I need to set up or reset a firefox account for myself.

when I try to go to Costco.ca i get the error message saying the page isn't redirecting properly because of refusal to accept cookies. How do I accept the cookies so that I can log into Costco.ca? (I can log into Costco.ca using other browsers, just not Firefox)

Firefox just self updated to 119.0 and twice now it has frozen then locked up the system so I couldn't even move the mouse cursor, and I had no choice but do a hardware reset. Windows 10 desktop PC. I had to download Chrome to get back on the net. I'm rolling back to an earlier version and turning off the updates. Updates usually do more harm than good, and I've been using these browsers since Netscape 2.