Firefox 技術支援討論區

at work we use a proxy network with authentication ONLY with the firefox browser i have proxy problems. I see the page access denied by the proxy server, the only solution is to close and open the application.

In the past few weeks when I click in an Outlook email "click here to view it in a web browser", the page is opened by Internet Explorer. It used to be Firefox. How can I clear out IE? Firefox is listed as the default browser. Interestingly when I posted the question, the contents of this message was deleted and was not sent. Is that MS at work?

Whenever I look in my history and click on a website it immediately moves to the top because Firefox only remembers the most recent visit. I want a proper history that shows all visits with well structured time. How can I do this? Is there any good addon?

I found multiple pages recently that cause problems with the network monitor in firefox developer tools. I attached an image as an example. The three requests are selected always as a "block". They seem to be somehow related but I do not find any documentation what their relation is. My educated guess (also see https://superuser.com/questions/1537396/what-is-the-reason-firefox-combines-multiple-requests-in-the-network-monitor) that it is HTTP/2 related. However I still do not get how to handle debugging in such circumstances. I'd like to see the individual requests and answers for debugging purposes. I do not find a way to reach that goal. Is it a technical restriction?

My Firefox wants to upgrade itself to version 79.

I'm now running version 73. Earlier this year Firefox auto-updated itself to version 74. Cors Everywhere did not work in version 74, and I need to use Cors Everywhere frequently. To get Cors Everywhere to work, I had to go back to version 73, and of course lost all my bookmarks, logins, etc.

So before allowing it to update to version 79, I'd like to know if Cors Everywhere works in version 79.

Thank you.

Trying to request a demo from bigcommerce.com. It complains javascript is not enabled. ("Please enable javascript and try again" about:config shows javascript.enabled = true.

What I've tried: 1. Disabled all addons / extensions 1 by 1 until they were all disabled. 2. Turned off tracking protection 3. Turned off content blocking. 4. Set all group policies to "not configured" (Had only disabled off telemetry and update any way). 5. Set network settings to "no proxy". 6. Cleared cache 7. Removed all bigcommerce.com cookies. 8. Reset all permissions (location, camera, notifications etc).

If I restart with add ons disabled it works fine, yet I'd disabled all add ons. The only preferences I had disabled were related to telemetry (in about:config).

The second time I lost all my data(200 tabs, bookmark panel, pws, addons). My steps: 1. Sync all data into 1 firefox account from 1 device 2. Reinstall my OS on the same device. 3. Connecting back by logging in and pressing the sync button and... Blah! I see nothing. No synced tabs, no bookmark panel. At the same time I did this kinda operation with having connected 1 account to 2 virtual devices(1 - real OS, 2 - Virtualbox). So could you please explain how Firefox Sync works? Is there a way to use sync account as a keeper for tabs and bookmark panel without using 2 devices? Or other ways? Thanks!

My addons/extensions disappear when I reboot my MACBOOK . I have installed DuckDuckGo, ADBlocker, Capitalone and some others. However, when I restart my computer the next day all of my addons/extensions are no longer there. I have reinstalled at least 3 times and with the sme result. Please Help ! Thanks