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Cannot install any add-ons or themes: "Download failed. Please check your connection."

Hi, I cannot download & installed any add-ons or themes. After clicking the install button, I always get a red bar saying "Download failed. Please check your connect… (Lesen Sie mehr)

Hi,

I cannot download & installed any add-ons or themes. After clicking the install button, I always get a red bar saying "Download failed. Please check your connection.". This happens on Firefox, Firefox beta and Firefox nightly.

I did some googling and found similar posts from a few years ago. These seem to suggest I don't have the correct certificate used to verify extension signatures:

I checked my certificates and I don't have anything from "Mozilla Corporation - signingca1.addons.mozilla.org" (there's a screenshot of this cert in the first forum link above), so I think this is indeed the issue? I've attached a screenshot of my cert list where the Mozilla cert should be.

Please note I am on an M3 Pro macbook pro. It's a work laptop and I thought maybe our network settings were interfering with things, but my previous work laptop (Intel) could install add-ons just fine.

Would appreciate some help!

P.S. I found a workaround where I copied over all extension JSON and XPI files from my old laptop. So I am using my previous extensions just fine but still cannot download any new ones. Also I don't have access to my old laptop anymore so can't copy over any new ones.

Gefragt von yusufmahtab12 vor 1 Woche

Letzte Antwort von zeroknight vor 2 Stunden

iMac Firefox Won't Open

After wipe of drive and reinstallation of Ventura by the Apple Store, and migration from Time Machine, Firefox won't launch. It's there, but it won't open. Click the ic… (Lesen Sie mehr)

After wipe of drive and reinstallation of Ventura by the Apple Store, and migration from Time Machine, Firefox won't launch. It's there, but it won't open. Click the icon and the icon moves as if it were going to launch, but the app doesn't open. If I were to reinstall Firefox, would it sync with my settings and Bookmarks?

Gefragt von John vor 2 Tagen

Letzte Antwort von jonzn4SUSE vor 21 Stunden

Firefox won't open.

There was a hardware problem with my iMac; the Apple Store fixed it and in the process wiped the disk and reinstalled Ventura. I then restored from Time Machine. Most t… (Lesen Sie mehr)

There was a hardware problem with my iMac; the Apple Store fixed it and in the process wiped the disk and reinstalled Ventura. I then restored from Time Machine. Most things work, but Firefox is one that doesn't. It will not open. If I click the Firefox icon in the Dock, it looks like it's going to open --- the icon moves to the right and bounces back --- (something similar happens if I click on the app in the Applications list), and then Firefox fails to open. No error message or anything. Firefox is still opens on my iPad and iPhone. Would it be of any use to reinstall Firefox? Would the new installation automatically find my Bookmarks and sync with the iPad and iPhone?

John Varela javcomm@icloud.com

Gefragt von John vor 22 Stunden

Letzte Antwort von jonzn4SUSE vor 22 Stunden

Update Firefox won't work

Hi, my 2008 Mac Pro uses OS X El Capitan, version 10.11.6 and I am on Firefox 78.15.0esr, I cannot install the new upgrade. Can I continue using the older version of Fire… (Lesen Sie mehr)

Hi, my 2008 Mac Pro uses OS X El Capitan, version 10.11.6 and I am on Firefox 78.15.0esr, I cannot install the new upgrade. Can I continue using the older version of Firefox even though the sync will not work anymore?

Gefragt von robertmingyew vor 3 Tagen

Letzte Antwort von James vor 3 Tagen

Firefox browser

Since Firefox updated? a week ago we have lost our browser and can not install a new setup. The cursor freezes before we can finish the new install. Any ideas for what … (Lesen Sie mehr)

Since Firefox updated? a week ago we have lost our browser and can not install a new setup. The cursor freezes before we can finish the new install. Any ideas for what to do? We did like Firefox before they fixed? it and we lost use. Thank You.

Gefragt von debiggar vor 4 Tagen

Letzte Antwort von cor-el vor 4 Tagen

Update from tar.bz2 files extracted

Ark extracted Version 119 files into /home/Downloads/Firefox/Firefox. I tried ./update from the BASH command line, but didn't know which argument(s) to add to that comman… (Lesen Sie mehr)

Ark extracted Version 119 files into /home/Downloads/Firefox/Firefox. I tried ./update from the BASH command line, but didn't know which argument(s) to add to that command. I'm hoping to update Firefox 78.14 ESR to a recent version, whether ESR or not. Thanks for your help.

Gefragt von lee.hinkleman vor 6 Tagen

Letzte Antwort von jonzn4SUSE vor 4 Tagen

trouble installing firefox on my computer

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 succe… (Lesen Sie mehr)

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

Gefragt von dr-z vor 5 Tagen

Letzte Antwort von Terasacucarti vor 5 Tagen

attempting to upgrade

I know my password is " [edited from public] " but you keep saying it's wrong! Why? It has always been that! Please, I am trying to update Firefox as per your directions!… (Lesen Sie mehr)

I know my password is " [edited from public] " but you keep saying it's wrong! Why? It has always been that! Please, I am trying to update Firefox as per your directions!

Gefragt von rogersunbeam66 vor 5 Tagen

Letzte Antwort von James vor 5 Tagen

downloading/installing Firefox

I have been using Firefox for quite some time. Suddenly it stopped working on my computer, I tried uninstalling and reinstalling, but I keep getting a message that there … (Lesen Sie mehr)

I have been using Firefox for quite some time. Suddenly it stopped working on my computer, I tried uninstalling and reinstalling, but I keep getting a message that there is a problem with the download and installation. Can anyone help? Let me know if you need any further information. Thank you in advance.

Gefragt von drzee1946 vor 1 Woche

Letzte Antwort von dr-z vor 5 Tagen

New Computer

I recently migrated data from my old MacBook Pro to a new MacBook Air. I installed Firefox on my new computer as it did not migrate. It installed fine but will not launch… (Lesen Sie mehr)

I recently migrated data from my old MacBook Pro to a new MacBook Air. I installed Firefox on my new computer as it did not migrate. It installed fine but will not launch. Please help.

Gefragt von Charlie vor 1 Woche

Letzte Antwort von James vor 6 Tagen

Problems with Firefox installation

I had posted my question yesterday and received a response from jscher2000. I sent a reply to the response by email a short while ago, but I wasn't sure it went through. … (Lesen Sie mehr)

I had posted my question yesterday and received a response from jscher2000. I sent a reply to the response by email a short while ago, but I wasn't sure it went through. Therefore, at the possible expense of having you receive the reply twice, I have recopied it here:

Thank you for trying to help me download Firefox onto my computer. As per your advice, I first tried shutting down and restarting my computer. That did not work. Then I went onto the link you sent me: https://www. mozilla,org/en-US/firefox/all/#product-desktop-release . The installation began, but only got up to around 80 - 90%. It stopped at the point where it said Execute: "C:|Program Files\Mozilla Firefox\default-browser-agent.exe" register-task 308046B... (It looks like there might be some more letters and/or numbers after the "B", but I can't see what they are.) I waited a few more hours to see if the installation would continue, but it did not. I then went back to try downloading Firefox in the regular way. First I got a message, "Now installing. Firefox will be ready in just a few moments." Again, installation proceeded to around 80 - 90 %, and then I got a message, "Hmmm. For some reason, we could not install Firefox. Choose OK to start over." Starting over didn't help. I got the same message. Any further help or advice that you can give me would be greatly appreciated. drzee1946 email: [removed from public support forum]

Gefragt von drzee1946 vor 1 Woche

Letzte Antwort von James vor 1 Woche

Cant sync

Hi, My computer died and I can't access it. I tried to sync firefox but it wont let me as I did not have my original password. All of my personal medical links and bill… (Lesen Sie mehr)

Hi, My computer died and I can't access it. I tried to sync firefox but it wont let me as I did not have my original password. All of my personal medical links and billing links are bookmarked there. Is there any hope to get it to sync?

Gefragt von laurie251 vor 1 Woche

Letzte Antwort von cor-el vor 1 Woche

Automatic duplication of data from Cloudfare when I use my VPN

I've noticed that when I use my VPN the Broadband data volume measured by my Glasswire traffic meter software monitor is doubled. I've tested it numerous times, and when … (Lesen Sie mehr)

I've noticed that when I use my VPN the Broadband data volume measured by my Glasswire traffic meter software monitor is doubled. I've tested it numerous times, and when I download a file it appears to download it automatically to Cloudfare as the volume is almost the exact double of the file size and double the amount as measured through my VPN. Could this problem be associated with the DNS over HTTPS feature. I've changed this setting so that Cloudfare doesn't load anything automatically, but there is no change. Is there another automatic Cloud setting I should change or could this problem be independent of Firefox. Thank you. -Reply to moderator Co-rel "answer": @Co-rel, You are not answering my question. And are you inferring there could be a bug in my Firefox version and I would need to debug it myself? I am asking if there is a default setup in association with Cloudfare which would record all of my traffic and/or downloads. I've canceled the default DNS to HTTPS Cloudfare default. Is there another automatic default service clouding to Cloudfare storing our data automatically built-in Firefox? My Traffic and Data Monitor Glasswire records or measures my traffic as anticipated when I browse without using my VPN. But when I use the VPN the data count is doubled and what newly appears on the register is the URL of Cloudfare which is the same size approximately as the file downloaded, doubling the traffic. I tested by isolating a simple maneuver of downloading a single 150 Mb file. I did it twice with the same result. I did the same thing twice with a 1 Gb file last Wednesday, got the same results.

Gefragt von cubitus700 vor 1 Woche

Letzte Antwort von cor-el vor 1 Woche

downloading statements from my bank account

Recently I have found that I cannot download statements from my bank account, also at the same time (2/3 months ago) I cannot access a Tesco website from Firefox. I can … (Lesen Sie mehr)

Recently I have found that I cannot download statements from my bank account, also at the same time (2/3 months ago) I cannot access a Tesco website from Firefox. I can carry out these functions easily from Microsoft Edge, so why the sudden change ? Can anyone please help me to fix this in Firefox?

Gefragt von stef.l1 vor 2 Wochen

Letzte Antwort von cor-el vor 2 Wochen