[Bug 1309236] [NEW] E: GPG error: http://extras.ubuntu.com trusty InRelease: Clearsigned file isn't valid, got 'NODATA' (does the network require authentication?)

[mhd]

Public bug reported:

I can't update and install any programm on Ubuntu 14.04 trusty

** Affects: apt (Ubuntu)
     Importance: Undecided
         Status: New

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Title:
  E: GPG error: http://extras.ubuntu.com trusty InRelease: Clearsigned
  file isn't valid, got 'NODATA' (does the network require
  authentication?)

Status in “apt” package in Ubuntu:
  New

Bug description:
  I can't update and install any programm on Ubuntu 14.04 trusty

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