I cannot install Firefox

[lascetic]

Please bare with the newbie.

I upgraded today Kubuntu to 24.04 and somehow firefox cannot be installed. There used to be one installed that I had removed some time ago. When I run sudo apt-get install firefox I get the following error:
E: Conflicting values set for option Signed-By regarding source https://packages.mozilla.org/apt/ mozilla: /et
c/apt/trusted.gpg.d/packages.mozilla.org.gpg != /etc/apt/keyrings/packages.mozilla.org.asc
E: The list of sources could not be read.

Is there a way to remove all previous left overs (versions, profiles, etc) and install a fresh firefox?

[Snowhog]

So, you don't have any version of Firefox installed at the moment? Assuming 'yes', open Konsole and type:

cd /etc/apt/trusted.gpg.d

then:

sudo rm packages.mozilla.org.gpg

then:

cd && sudo apt update && sudo apt-get install firefox

[lascetic]

So, you don't have any version of Firefox installed at the moment? Assuming 'yes', open Konsole and type:

cd /etc/apt/trusted.gpg.d

then:

sudo rm packages.mozilla.org.gpg

then:

cd && sudo apt update && sudo apt-get install firefox

Hi and thanks for your reply. I tried the above but I still get the same error messages.

[Snowhog]

Okay. In Konsole, type: sudo mv /etc/apt/keyrings/packages.mozilla.org.asc packagages.mozilla.org.ascBACKUP

Then try installing firefox again.

[lascetic]

Okay. In Konsole, type: sudo mv /etc/apt/keyrings/packages.mozilla.org.asc packagages.mozilla.org.ascBACKUP

Then try installing firefox again.

Same error

[Snowhog]

Okay. Undo the last command from above: sudo mv /etc/apt/keyrings/packages.mozilla.org.ascBACKUP /etc/apt/keyrings/packages.mozilla.org.asc

Then take a look through this: https://www.baeldung.com/linux/confl...ror-resolution

[lascetic]

Okay. Undo the last command from above: sudo mv /etc/apt/keyrings/packages.mozilla.org.ascBACKUP /etc/apt/keyrings/packages.mozilla.org.asc

Then take a look through this: https://www.baeldung.com/linux/confl...ror-resolution

Couldn't undo the command, error: mv: cannot stat '/etc/apt/keyrings/packages.mozilla.org.ascBACKUP': No such file or directory

The keyrings folder appears to be empty so I couldn't proceed with the instructions of the link.

[Snowhog]

As to undoing the mv command; I had a typo in the command in post #4 -- I misspelled packages as packagages -- and I neglected to include the path, so the moved file is in your user home directory.

Launch Konsole and ensure you are in your home directory. Then type:

sudo mv packagages.mozilla.org.ascBACKUP /etc/apt/keyrings/packages.mozilla.org.asc

[lascetic]

By step 4 on the link nothing new. Then I have this:



And from sudo vi mozilla.list:



To be honest I'm a bit lost.

[lascetic]

OK, I finally managed to install firefox. I deleted the mozilla.lists file and then followed the instructions from this site https://www.omgubuntu.co.uk/2022/04/...t-ubuntu-22-04

[Snowhog]

Glad you got it figured out.