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apt-get update Err:1 http://repo.kali.org/kali kali-rolling InRelease
403 Forbidden Hit:2 http://old.kali.org/kali sana InRelease Reading package lists... Done E: Failed to fetch http://repo.kali.org/kali/dists/kali-rolling/InRelease 403 Forbidden E: Some index files failed to download. They have been ignored, or old ones used instead.

marked as duplicate by Jeff Schaller, DopeGhoti, Rui F Ribeiro, Timothy Martin, Stephen Kitt Mar 16 '18 at 21:44

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  • 4
    Please don't post pictures of text; just post the text. – DopeGhoti Mar 16 '18 at 18:00

Your first and second lines are wrong. The correct line is deb http://http.kali.org/kali kali-rolling main contrib non-free (You probably don't need the second line.) Source: The Kali Rolling Repository

You have no need to include the third and fourth lines. They link to the RETIRED Kali sana repository. DON'T MIX YOUR REPOSITORIES!

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