> On 04-07-17, Wayne Hartell wrote: > > > > > >Did you try to change mirror you use in your sources.list? > > > > > > > I did and it doesn't help (I get the same error with multiple > > different sources). > > > > GPG error: http://deb.debian.org/debian stretch-updates InRelease: The > > following signatures couldn't be verified because the public key is > > not > > available: NO_PUBKEY 8B48AD6246925553 NO_PUBKEY 7638D0442B90D010The > > repository 'http://deb.debian.org/debian stretch-updates InRelease' is > > not signed.Updating from such a repository can't be done securely, and > > is therefore disabled by default.See apt-secure(8) manpage for > > repository creation and user configuration details. > > > > Notably, the keys (e.g., 8B48AD6246925553 and 7638D0442B90D010) ARE > > present when I run 'apt-key list'. > > > > When I search this forum for these keys (e.g., "8B48AD6246925553") I > > find two threads with similar kinds of errors, but no solution on > > either. I'm wondering whether I have fallen into some kind of crack perhaps. > > > > Not sure that it will be helpful, but just a thought. How about reinstalling debian-archive-keyring package?
That doesn't seem possible, I get: "Reinstallation of debian-archive-keyring is not possible, it cannot be downloaded." I tried adding my installation DVD back into the sources, but apt rejects it with the following: "The repository 'cdrom://Debian GNU/Linux 9.0.0 _Stretch_ = Official amd64 DVD Binary-1 20170617-13:08] stretch Release' does not have a Release file."
