GPG error when I want to apt update

Question

I just installed Kali NetHunter and I'm trying to do a simple apt update but it looks like a public key is missing

root@kali:~# apt-get update
 0% [Waiting for headers] [Connected to packages.microsoft.com (13.8Get:2 https://packages.microsoft.com/repos/microsoft-debian-stretch-prod stretch InRelease [3232 B]
 Hit:1 http://kali.download/kali kali-rolling InRelease
 Err:2 https://packages.microsoft.com/repos/microsoft-debian-stretch-prod stretch InRelease
   The following signatures couldn't be verified because the public key is not available: NO_PUBKEY EB3E94ADBE1229CF
 Reading package lists... Done
 W: GPG error: https://packages.microsoft.com/repos/microsoft-debian-stretch-prod stretch InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY EB3E94ADBE1229CF
 E: The repository 'https://packages.microsoft.com/repos/microsoft-debian-stretch-prod stretch InRelease' is not signed.
 N: Updating from such a repository can't be done securely, and is therefore disabled by default.
 N: See apt-secure(8) manpage for repository creation and user configuration details.

I tried

curl -s https://packages.microsoft.com/repos/microsoft-debian-stretch-prod/dists/stretch/Release.gpg | apt-key add -

and

wget --no-check-certificate https://packages.microsoft.com/repos/microsoft-debian-stretch-prod/dists/stretch/Release.gpg | apt-key add -

And the result was gpg: no valid OpenPGP data found for both

Solution 1

The workaround solution I found is to delete /etc/apt/sources.list.d/microsoft.list and to make sure the kali repo is uncommented and is inside the main /etc/apt/sources.list

Solution 2

load the key from microsoft

curl https://packages.microsoft.com/keys/microsoft.asc | sudo apt-key add -

Comments

[Jeff Schaller]

Has Kali changed their policy regarding 3rd-party repositories? Last I knew, they only wanted kali.org in the sources.list...

[Jeff Schaller]

Same pubkey error: unix.stackexchange.com/a/479137/117549

[Yox]

There's nothing else than the kali repo in the sources.list but I found a microsoft.list inside /etc/apt/sources.list.d/ And I don't think it's the same problem since even curl -s https://packages.microsoft.com/keys/microsoft.asc |apt-key add - give me the same result gpg: no valid OpenPGP data found

[Sparhawk]

@JeffSchaller You are correct: "Any additional repositories added to the Kali sources.list file will most likely BREAK YOUR KALI LINUX INSTALL."

[U.V.]

to solve a problem remove it??? not really curl packages.microsoft.com/keys/microsoft.asc | sudo apt-key add -

[AveryFreeman]

This was the first thing I tried after encountering an error when installing the mono-project repo in Ubuntu 20.10, and apparently it was all that was necessary. Thanks