[Duplicated]Opera's signing key not found

[ModernMajorGeneral]

ModernMajorGeneral last edited by

I am using Linux Mint 22.1, based on Ubuntu 24.04. I have recently started to get an error from

sudo apt-get update

"W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://deb.opera.com/opera-stable stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 11EE8C00B693A745"

I see that there's a new signing key for 2025.

I have done (again) the

wget -qO- https://deb.opera.com/archive.key | gpg --dearmor | sudo dd of=/usr/share/keyrings/opera-browser.gpg

echo "deb [signed-by=/usr/share/keyrings/opera-browser.gpg] https://deb.opera.com/opera-stable/ stable non-free" | sudo dd of=/etc/apt/sources.list.d/opera-archive.list

per the instructions at https://deb.opera.com/manual.html

Same error.

I have downloaded and installed opera-stable_119.0.5497.56_amd64.deb

Same error.

The various files look OK:

$ cat /etc/apt/sources.list.d/opera-stable.list 
deb [signed-by=/usr/share/keyrings/opera-stable-archive-keyring.gpg] https://deb.opera.com/opera-stable/ stable non-free

$ ls -lha /usr/share/keyrings/opera-browser.gpg 
-rw-r--r-- 1 root root 1.8K Jun  2 14:04 /usr/share/keyrings/opera-browser.gpg

.. but at the moment, I have Opera installed and working, but the system has stopped being able to check for updates.

[ModernMajorGeneral]

ModernMajorGeneral @ModernMajorGeneral last edited by

OK, it's been tagged as 'duplicated', and I know this sort of thing happens every time Opera change their signing key, but where's the solution?

I've looked back as far as 2023 in this bit without spotting anyone else having a problem with this recently, never mind been given the solution for the missing 2025 signing key.

[leocg]

leocg Moderator Volunteer @ModernMajorGeneral last edited by

@ModernMajorGeneral See https://forums.opera.com/post/386055

[ModernMajorGeneral]

ModernMajorGeneral @leocg last edited by

@leocg

Thanks, but that just points to the page I've linked to (and copied the commands from) above.

I've done that. I'm still getting the 'public key not available' error.

[dlsumy]

dlsumy last edited by

Hello
I had the same problem in my Ubuntu.
I solved it like this: first I downloaded the updated key with the command:

sudo wget -qO- https://deb.opera.com/archive.key | gpg --dearmor | sudo dd of=/usr/share/keyrings/opera-browser.gpg

Then I corrected the file /etc/apt/sources.list.d/opera-stable.list to this state:

deb [signed-by=/usr/share/keyrings/opera-browser.gpg] https://deb.opera.com/opera-stable/ stable non-free

Now everything is updating normally for me.

[ModernMajorGeneral]

ModernMajorGeneral @dlsumy last edited by ModernMajorGeneral

@dlsumy Ah, thanks - somehow I managed to delete the wrong file for Opera in /etc/apt/sources.list.d/ (having two was causing a different error) and removed the new one rather than the old one.

Why Opera decided to change the name of the file is a different question