I-Firefox Community Forum

The full winget command is: ```pwsh winget install --id Mozilla.Firefox.zh-CN -s winget -e -i -l D:/.../Mozilla/Firefox/ ```

The winget log mentioned that winget downloaded https://download-installer.cdn.mozilla.net/pub/firefox/releases/150.0.2/win64/zh-CN/Firefox%20Setup%20150.0.2.exe ```log 2026-05-12 22:19:28.840 [CORE] WinINet downloading from url: https://download-installer.cdn.mozilla.net/pub/firefox/releases/150.0.2/win64/zh-CN/Firefox%20Setup%20150.0.2.exe 2026-05-12 22:37:42.091 [CORE] Download hash: 6c7fb833ebb13637daf750c7a2c611e2b6d8d324dc2463eed40e8478d0c791fc 2026-05-12 22:37:42.091 [CORE] Download completed. 2026-05-12 22:37:42.094 [CLI ] Installer hash verified ```

Installer args: ```log 2026-05-12 22:37:43.543 [CLI ] Installer args: /InstallDirectoryPath="D:/.../Mozilla/Firefox/" 2026-05-12 22:37:43.545 [CLI ] Starting: 'D:\Temp\WinGet\Mozilla.Firefox.zh-CN.150.0.2\Firefox%20Setup%20150.0.2.exe' with arguments ' /InstallDirectoryPath="D:/.../Mozilla/Firefox/"' 2026-05-12 22:38:12.554 [REPO] Reading MSI UpgradeCodes 2026-05-12 22:38:12.891 [REPO] Reading MSI UpgradeCodes 2026-05-12 22:38:13.405 [CLI ] During package install, 1 changes to ARP were observed, 1 matches were found for the package, and 1 packages were in both 2026-05-12 22:38:13.405 [CLI ] The entry determined to be associated with the package is 'Mozilla Firefox (x64 zh-CN)', with publisher 'Mozilla' ```

Then winget shows the installation was successful, but the shortcuts in the Start menu and on the desktop point to a path that doesn't exist. I noticed that this path is the one I passed to winget via the -l parameter, but it is missing the slash (`/`) > D:/a/b/Mozilla/Firefox/ → D:\abMozillaFirefox\ I couldn't find the installed Firefox either in the root directory of drive D or under the originally expected path D:\...\Mozilla\Firefox.

Although I passed the -i parameter (specifying interactive installation) to winget, I didn't see the installer window. In the user registry, the installer also wrote the aforementioned incorrect path, and I cannot uninstall this installation through Windows Settings.

I wrote a script myself to search for folders or files with 'firefox' in the name (case-insensitive) on my system's C and D drives, and I only found this folder that looks related: ```pwsh > ls "C:\Users\...\AppData\Roaming\Mozilla\Firefox"

   Directory: C:\Users\...\AppData\Roaming\Mozilla\Firefox

Mode LastWriteTime Length Name

d---- 2025/11/23 18:05 Background Tasks Profiles d---- 2025/12/24 18:47 Crash Reports d---- 2025/11/23 18:05 Pending Pings d---- 2025/11/23 18:06 Profile Groups d---- 2025/11/23 18:06 Profiles -a--- 2025/12/27 8:43 75 installs.ini -a--- 2025/12/27 8:43 482 profiles.ini ``` But based on the LastWriteTime, this seems to have been left when I previously installed Firefox.

I want to know what the installer does after running the above installation, and how I can undo these changes to reinstall Firefox?

> Note: English is not my native language, please forgive my spelling or grammar mistakes. > I originally wanted to post on a Chinese forum, but I was guided here...

firefox set up won't load. I have completed all of the required steps but I am still being asked to finish the set up. Anybody else have this issue? If so what do I do?

I want to re-install Firefox after having re-installed Windows 11. But the installation keeps freezing or I get a message that it's already installed and just needs to be refreshed, which doesn't work either. I tried removing the Mozilla program files from File Explorer but that froze at 99% complete, although the files did show in the Recycle Bin. I definitely need help.

I followed the advise and removed all the profiles from my laptop. (Copies are on an external hard drive.) And I used the download file from the Mozilla community site which is 490 KB versus the 375 KB download file from firefox.com just in case the smaller file was corrupted. But I still got the Profile Missing error message.

I am trying to simulate a laptop that has never used Firefox and so can't say that "Your Firefox profile cannot be loaded.  It may be missing or inaccessible."  I uninstalled Firefox using the Installed Apps page. Can there be fragments of Firefox that I need to hunt down and remove? I also removed the Old Firefox Data folder from the desktop.

How can I successfully install Firefox? Then I will use my old profiles that contain all my bookmarks.

I would like to install firefox pc on a windows 11 laptop that already has firefox windows loaded on it, I can not get it to run. I think the installer exe has run and then get a message about windows and try again or ask for support help.

Win10 desktop: Boot-up forces selecting Firefox as default, then goes to default apps screen. Selections are correct. No save function (thought they auto-saved) . Then have two Firefox icons on taskbar: first is far left (normal) select and calendar & email launch. The second Firefox icon is far right on taskbar: Select and the system repeats the select browser & default apps Shown in the first line above.

Installing the latest version of Firefox and Debian 13.

Following the instructions in the Mozilla Support document Install Firefox on Linux https://support.mozilla.org/en-US/kb/install-firefox-linux

Operating as Super User.

Chose the option Install Firefox .deb package for Debian-based distributions (recommended)

Steps 1, 2, and 3 worked exactly as expected with in a terminal and using bash.

Step 4 and 5, following the For Debian Trixie and Newer choice does not work. A lot of digging on the internet and found that the command beginning with cat <<eof needs to be cat <<’eof’. the second part of this process has same issue. appling new information solved problem both statements now work. < p></eof>

At this point you have a directory /etc/apt/keyrings. In this directory you have the file packages.mozilla.org.asc Step 3 returns success. You have also successfully applied steps 4 and 5. In directory /etc/apr/souces.list.d you have the file mozilla.sources.

It contains the instruction “Signed-By: /usr/share/keyrings/packages.mozilla.org.gpg”

No where in the previous stepd was the file Signed-By: packages.mozilla.org.gpg ever created.

Why is the deb package looking in /usr/share/keyrings when step 2 puts a similarly named file Signed-By: /usr/share/keyrings/packages.mozilla.org.asc in /etc/apt/keyrings

Step 6

Running apt update returns

Err:4 https://packages.mozilla.org/apt mozilla InRelease  Sub-process /usr/bin/sqv returned an error code (1), error message is: Error: Failed to parse keyr ing "/usr/share/keyrings/packages.mozilla.org.gpg"  Caused by:     0: Reading "/usr/share/keyrings/p ackages.mozilla.org.gpg": No such file or directory (os error 2)     1: No such file or directory (o s error 2) Warning: OpenPGP signature verification failed: https://packages.mozilla.org/apt mozilla InRelease: Sub-process /usr/bin/sqv returned an error code (1), error message is: Error: Failed to parse keyrin g "/usr/share/keyrings/packages.mozilla.org.gpg"  Caused by:     0: Reading "/usr/share/keyrings/pac kages.mozilla.org.gpg": No such file or directory (os error 2)     1: No such file or directory (os error 2) Error: The repository 'https://packages.mozilla.org/apt mozilla InRelease' is not signed.

Help

This is a follow up of previous posts. Note to Wxie & Denys

my firefox keeps getting completely deleted from my system after repeatedly reinstalling and having it get delited from my windows 11 system i installed with administrator permission and the installation lasted for two days now this morning after working for about an hour it crashed twice on the third attempt to open it i found that it had been deleted what do reckon i do

This article：https://support.mozilla.org/kb/install-firefox-linux. I want to install Firefox offline or use the deb package directly. My system is arm64.