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I installed ubuntu server 18.04.1 and when I run sudo apt update I get the following error message:

... bionic Release 404 Not Found [IP: 10.251.36.205 80]

I can't perform a apt update. I am stuck. Please help.

Also:

The repository 'http://archive.ubuntu.com/ubuntu bionic Release' no longer has a Release file.Updating from such a repository can't be done securely...

  • A 10.x IP is private. Are you using a VPN, proxy, or university/corporate network? – wjandrea Dec 5 '18 at 22:45
  • education network – surah16 Dec 5 '18 at 22:48
  • I can ping other websites. – surah16 Dec 5 '18 at 22:54
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    I don't know much about this, but I would guess you need to talk to your school's IT. – wjandrea Dec 5 '18 at 22:56

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