Firefox Community Forum

Resolved Update: apparently cat cannot write to /etc. Resolved by using:

sudo tee /etc/apt/sources.list.d/mozilla.sources <<eof types: deb uris: https: packages.mozilla.org apt suites: mozilla components: main signed-by: etc keyrings packages.mozilla.org.asc eof p></eof>

The instructions need updating!

_________________original problem (in case some one else needs the information)

I am following the instructions in section "Install Firefox from Mozilla Repository (Recommended)" at https://support.mozilla.org/en-US/kb/run-firefox-chromeos At step 4 I am receiving a permission denied error: "-bash: /etc/apt/sources.list.d/mozilla.sources: Permission denied" I am not sure how to resolve or continue.

Last command and output:

username@penguin:~ cat <<EOF > /etc/apt/sources.list.d/mozilla.sources Types: deb URIs: https://packages.mozilla.org/apt Suites: mozilla Components: main Signed-By: /etc/apt/keyrings/packages.mozilla.org.asc EOF -bash: /etc/apt/sources.list.d/mozilla.sources: Permission denied

bold textturned on vpn and nothing can connect. no search engines no sites even from known urls. unusable sorry. will check again in a few days before abandining and deleting my account. thanks for you effort at least

I’ve been using Firefox for months without manually creating a profile (I assume one is created by default). I had a lot of bookmarks, and today I accidentally created a profile manually, but then deleted it after noticing it didn’t have my bookmarks. Now, even after deleting it, I still don’t have my bookmarks, and Firefox keeps creating profiles for me. I checked backup files, but I can’t find anything, or maybe I don’t even know which folder I’m supposed to look in. My browsing history is gone, and I think I also lost my saved passwords or usernames for websites I used.

I’ve already tried using firefox.exe -P and checking %appdata%\Mozilla\Firefox\Profiles\, but my bookmarks aren’t in either of those folders (.default or .default-release). Honestly, I really don’t want to believe I could have lost everything that easily.

I even used Recuva to try recovering files like places.sqlite and checked the bookmarks folders in the only two directories where those files existed, but it was pointless. Honestly, I still don’t even understand how everything got deleted just from manually creating a profile. I really didn’t expect something like this to happen.

I have multiple profiles created on Firefox. This weekend I bought a new computer. I downloaded Firefox and logged in. None of my profiles are there. How can I sync those or bring them over? I have accounts on those browsers that I need to be able to access. Thank you.

In Windows 11, how do I add the Firefox icon to the extreme top left of its webpages?

When I switch tabs to Firefox, typically using Alt+Tab, I am often unsure at first which program I am in. I have searched Firefox settings, and googled extensively, and there seems to be no way to add the icon back. I believe that it was once there, but I am unsure of this.

Almost every other program places its icon on the top left of its pages. Surely it is possible to do the same in Firefox, which just has an empty space there.

(But I am wrong on the last point, because Edge, which I rarely use, also has no icon there. Surely Firefox does not want to share any problem that Edge has!)

I'm reposting a question already opened here because a moderator suggested to do so. Actually I though I was posting to the international forum from the URL...

I was trying to access a local HTTPS website of an embedded device (a Siemens S7-1500 PLC) that is using a self-signed certificate, but was unable to go on (attached image #1, in Italian language) due to the the SEC_ERROR_REUSED_ISSUER_AND_SERIAL error. I've browsed a similar PLC webserver in the past, so the fact that the device exposes a similar certificate serial number is not so strange for me, considering also it's self-signed.

The problem is that I cannot follow the instructions of the Mozilla knowledgebase here because I'm not able to identify the correct certificate of the website!

In the attached image #2 you can see that the connection is detected as not encrypted, I suppose because only the form part of the HTML that is posting the data using HTTPS while the rest is using HTTP, but I'm not sure. If I click on the padlock icon (attached image #3) the info about the current certificate is not displayed.

Then I went into Tools > Options and searched for "certificates"; as you can see in the attached images #4 and #5, neither in the Servers tab nor in the Authorities tab I can find any item that is related to 192.168.10.2 (the webserver IP address) or Siemens (the embedded device manufacturer). But unfortunately the error persist! Initially there was a 192.168.10.2:443 line in the Servers tab and I removed it and restarted Firefox, but it didn't solve, so at the moment the situation is the one depicted by the attachments.

I had to use Microsoft Edge to access the website, but I would like to solve this issue and use Firefox instead. Is there anything else I can do to bypass the error? Why doesn't the error page provide a way to correctly identify the wrong certificate using its fingerprint and/or name? Or, maybe, is there a way to disable this check for local IP addresses or for items in a whitelist?

Thanks for your help.