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51 votes
3 answers
292k views

How can I get past a “Repository is not signed…” message when attempting to upgrade Kali Linux from a mounted disk image?

I am trying to upgrade Kali Linux from 2017.2 to 2018.2 using an iso mounted in the Kali Virtual Machine. So, what I did was I edited my sources.list file to: deb file:///media/cdrom0 kali-rolling ...
DeshBhakt's user avatar
  • 727
19 votes
11 answers
101k views

apt-get update issue in Kali

I'm running Kali Linux in WSL2. It's a new installation (using wsl --install) but when I try to apt-get update I get the following error: W: An error occurred during the signature verification. The ...
TheDoctor025's user avatar
1 vote
0 answers
2k views

Kali apt-get update fails with "Clearsigned file isn't valid"

I'm trying to do apt-get update at in result i am getting these errors, tried various methods, couldnt resolve. i need help with this error. Get:1 http://http.kali.org/kali kali-rolling InRelease [18....
Ravi's user avatar
  • 11