Repository Not Signed Error on Linux Mint 19.1


I clean-installed Linux Mint 19.1 on an Asus UX310UA and tried to install Brave browser. I’m using the installation instructions here and get the following fail message.

E: Failed to fetch 403 Forbidden [IP: 443]
E: The repository ‘ tessa InRelease’ is not signed.
N: Updating from such a repository can’t be done securely, and is therefore disabled by default.

I cut and pasted the install commands from the Linux Mint 17+ instructions. Did I miss anything?

Thanks for reaching out. We going to take a look on our end and see what may be happening. I’ll let you know when I have more info.
Appreciate your patience!

:+1: thx. Appreciate the quick response.

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Can you try rerunning the curl command at the beginning?
curl -s | sudo apt-key add -

Oh - also. I see that you’re fetching

Where did you get the tessa from? Should be bionic.

Hi Mattches,

I removed two files from /etc/apt/sources.list.d (brave.list and brave-browser-release-bionic.list). They both had the main/binary-amd64/Packages line in them. That was creating the multiple configuration issue.

I reinstalled from the 17+ instructions and I have no more issues with repository updates. I reviewed the list of terminal commands and did not find where Tessa entered the mix but did see it when I did an update.

_Ign:8 tessa InRelease
_Hit:9 tessa Release

Thanks for your help and quick response.

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My pleasure!
Thank you for your support :slight_smile: