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I'm trying to install Firefox on Ubuntu 20.04 (running under WSL2). When I try sudo apt install firefox I get error:

Err:1 http://security.ubuntu.com/ubuntu focal-updates/main amd64 firefox amd64   85.0+build1-0ubuntu0.20.04.1
404  Not Found [IP: 91.189.88.152 80]
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/f/firefox/firefox_85.0+build1-0ubuntu0.20.04.1_amd64.deb  404  Not Found [IP: 91.189.88.152 80]

I've been able to install other packages, so I don't think the repository is misconfigured.

What to do?

Steve
  • 303

1 Answers1

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85.0 has been superseded and removed from the repositories. That's why it's 404 Not Found.

Run sudo apt update to refresh apt's database of available packages and versions, then try installing again.

user535733
  • 62,253