query: Failed to fetch update on Ubuntu 14.04 LTS (Trusty Tahr)
positive_passages.docid: 4853
positive_passages.text: Trouble downloading packages list due to a "Hash sum mismatch" error
negative_passages.docid: 144214
negative_passages.text: Debian 8 apt-get update showing 404 Not Found
negative_passages.docid: 2670
negative_passages.text: Why is "No new release found" when upgrading from a LTS to the next?
negative_passages.docid: 1632
negative_passages.text: How do I fix a "Failed to download package files" error?
negative_passages.docid: 13970
negative_passages.text: Why am I not getting the Ubuntu 18.04 upgrade?
negative_passages.docid: 8353
negative_passages.text: How do I access my software updater if it doesn't display anywhere?
negative_passages.docid: 83960
negative_passages.text: How do I change my update server in Ubuntu 18.04?
negative_passages.docid: 65099
negative_passages.text: Unable to install any updates through update manager/apt-get upgrade
negative_passages.docid: 140893
negative_passages.text: Error when using apt-get update
negative_passages.docid: 31506
negative_passages.text: How do I update Ubuntu manually?
negative_passages.docid: 66915
negative_passages.text: How to request a package upgrade in the next Ubuntu release
negative_passages.docid: 21323
negative_passages.text: Where can I download the latest release of Ubuntu?
negative_passages.docid: 122588
negative_passages.text: Can't connect to ubuntu archive when using apt-get update
negative_passages.docid: 113145
negative_passages.text: What does 'apt-get install update' do?
negative_passages.docid: 7181
negative_passages.text: apt-get is stuck at "Fetched XXKb in XXsec"
negative_passages.docid: 115421
negative_passages.text: Ubuntu 13.10 to 14.04 Lts does not upgrade, keeps showing error
negative_passages.docid: 90937
negative_passages.text: apt-get update errors