Dear Forum Members,
I am trying to update my NAS, which is a straight forward Jessie. However
sudo apt-get update
gives me
Get:1 http://ftp.debian.org jessie InRelease
Ign http://ftp.debian.org jessie InReleasep /var/lib/apt/lists/partial/ftp.debian.org_debian_dists_jessie_InRelease into data and signature failed
E: GPG error: http://ftp.debian.org jessie InRelease: Clearsigned file isn't valid, got 'NODATA' (does the network require authentication?)
I tried various suggested solutions, such as
$ cd /var/lib/apt
$ sudo mv lists lists.old
$ sudo mkdir -p lists/partial
$ sudo apt-get update
from here
https://askubuntu.com/questions/474549/ ... entication
Other sources suggested that it might be a proxy issue or parental control in a fritz box. Both should not apply in my case.
Thank you for your help!
Cheers, Helmut
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