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?

Hi, I have been using firefox for many years and never showed me an UAC popup requiring permissions to update firefox as soon as i clicked the firefox icon in the taskbar. Today suddenly required it. I am administrator in windows 10, and have automatic updates enabled as always. I am using 125.0.3 (64-bit) version. This could be a bug or a virus? i am worried that could have given permission to a virus to install something else when i pressed the firefox icon.

When i updated Firefox just now it offered several recommended security add-ons. I added a few of them. But now I can't access Facebook. I disabled them one at a time and still cannot get in. What do I do now?

I am attending college classes on line, I frequently have 4 tabs pinned, and 3-4 further tabs open. Without any discernible pattern I can fathom, Firefox will close everything. I have no add-ons to remove, update or restart. I have no plug ins to remove, update or restart. My drivers and Windows OS are all up to date.

I ask my Firefox to delete my history and clear the cash when it is closed, so it takes me roughly 5-20 minutes to log back into everything I'm doing for class or my personal life when this happens.

Upon researching this matter today, all the fixes I can find involve removing add-ons and plug ins. Or updating them. Or turning them off. I have none to try this fix on. The advice on the main page says to check that all system are up to date. I have checked, they are.

Hoping someone has some advice. Thanks!

Here we go again.... I have been watching Amazon Prime Videos on my Mac and also my HP computers for a long time. About 3 weeks ago, when I tried to stream a video, it would not start and I got an error message that the video was not available. After trying both computers, many times over the 3 weeks, I have gotten the same results. Amazon says it is the Firefox browser that is the problem and want me to install Chrome, which I DO NOT WANT on my computer. Can you fix the problem or help in any way?