sudo apt-get update   get this error:  W: GPG error: http://debian.datastax.com stable Release: The following signatures were invalid: KEYEXPIRED 1439480363 KEYEXPIRED 1439480363 KEYEXPIRED 1439480363   even after use --fix-missing, still have the same error.
121282
While updating my packages on a debian based system by a   sudo apt-get update   I've got that error message :  Reading package lists... Done W: GPG error: ftp://ftp.fr.debian.org stable/non-US Release:  The following signatures were invalid: KEYEXPIRED 1138684904   What should I do to fix this ?
6917
I am trying to install current stable version 0.12.1, but it only installs 0.9.9. Any chance to install latest version with apt-get install? It seems that 0.9.9 is very old :(
20954
I'm using the  for quite a long time; but after exporting my key storage and gpg keys to another machine I see following output:  $ gpg --list-key /home/shved/.gnupg/pubring.gpg ------------------------------ pub   2048R/FA829B53 2015-04-28 uid       [ultimate] Yury Shvedov (shved) &lt;shved@lvk.cs.msu.su&gt; sub   2048R/74270D4A 2015-04-28   My key imported and trusted, but not usable:  pass insert test Enter password for test:  Retype password for test:  gpg: 2048R/FA829B53: skipped: No public key gpg: [stdin]: encryption failed: No public key fatal: pathspec '/home/shved/.password-store/test.gpg' did not match any files   What can I do to use my key again?
104258
I'm trying to do an apt-get update or apt-get install xyz and I'm seeing timeouts like this:  W: Failed to fetch http://eu-west-1.ec2.archive.ubuntu.com/ubuntu/dists/oneiric-updates/Release.gpg   Unable to connect to eu-west-1.ec2.archive.ubuntu.com:http: [IP: 10.224.87.159 80]   Is this a transient issue with Ubuntu, or maybe it's something on my end. The box I'm accessing it from is in EC2-EU.  Perhaps there is a way to force the installer to use the US servers which seem to work?
118143
After executing this command  sudo apt-get update &amp;&amp; sudo apt-get -y upgrade   I get this error  W: The repository 'http://dl.google.com/linux/chrome/deb stable Release' does not have a Release file. N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use. N: See apt-secure(8) manpage for repository creation and user configuration details.   I've seen past inquiries on same issue but the answers given are specific to other repositories.  Any help will be appreciated.
63803
When I try to install any software, I encounter this error, and therefore I cannot update.  Preconfiguring packages ... dpkg: error: parsing file '/var/lib/dpkg/status' near line 51245 package 'oracle-xe':  mixed non-coinstallable and coinstallable package instances present N: Ignoring file 'gcl' in directory '/etc/apt/sources.list.d/' as it has no filename extension N: Ignoring file 'gcl' in directory '/etc/apt/sources.list.d/' as it has no filename extension E: Sub-process /usr/bin/dpkg returned an error code (2)
57501
Both apt-get update and upgrade hang:  sudo apt-get update [sudo] password for xxx:  0% [Connecting to archive.ubuntu.com (2001:67c:1360:8001::17)]   I'm able to ping archive.ubuntu.com:  ping archive.ubuntu.com PING archive.ubuntu.com (91.189.88.162) 56(84) bytes of data. 64 bytes from yukinko.canonical.com (91.189.88.162): icmp_seq=1 ttl=50 time=42.2 ms 64 bytes from yukinko.canonical.com (91.189.88.162): icmp_seq=2 ttl=50 time=42.1 ms 64 bytes from yukinko.canonical.com (91.189.88.162): icmp_seq=3 ttl=50 time=42.1 ms ^C --- archive.ubuntu.com ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2002ms rtt min/avg/max/mdev = 42.169/42.206/42.265/0.240 ms   I checked , and I don't think its the same issue.  Any tips for investigating this further?
18473
I'm on Ubuntu 16 and I'd like to add a neo4j package. I tried in 3 ways all leading to the same error.  These are my attempts:  wget -O - http://debian.neo4j.org/neotechnology.gpg.key | apt-key add -  sudo wget -O - http://debian.neo4j.org/neotechnology.gpg.key | apt-key add -  sudo -i wget -O - http://debian.neo4j.org/neotechnology.gpg.key | apt-key add -   But I always get this error message:  ERROR: This command can only be used by root. --2016-11-04  http://debian.neo4j.org/neotechnology.gpg.key Resolving debian.neo4j.org (debian.neo4j.org)... 52.0.233.188 Connecting to debian.neo4j.org (debian.neo4j.org)|52.0.233.188|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 4791 (4,7K) [application/octet-stream] Saving to: ‘STDOUT’  -                     0%[                    ]       0  --.-KB/s    in 0s         Cannot write to ‘-’ (Broken pipe).
17509
dam@ubuntu:~$ sudo apt-get update   W: Failed ....  adam@ubuntu:~$ sudo apt-get install fetch   Reading package lists... Done   Building dependency tree          Reading state information... Done   E: Unable to locate package fetch
95
The error I am having when trying to update my package list.  W: GPG error: http://download.opensuse.org ./ Release: The following signatures were invalid: KEYEXPIRED 1436387333  W: Failed to fetch http://ppa.launchpad.net/samrog131/ppa/ubuntu/dists/trusty/main/binary-amd64/Packages  404  Not Found  E: Some index files failed to download. They have been ignored, or old ones used instead.
41600
When updating I got the following message:  W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://dl.google.com/linux/chrome/deb stable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6494C6D6997C215E W: Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/Release.gpg The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6494C6D6997C215E W: Some index files failed to download. They have been ignored, or old ones used instead. Reading package lists... Done Building dependency tree        Reading state information... Done Calculating upgrade... Done   I'm on Ubuntu 16.04 and currently using Chrome 60.0.3112.90. Any suggestions? I'm also trying to install libimobiledevice but apparently the system is not reading the repository where I just added the PPA as I can't install it. Thanks in advance for any help.
49774
This is the error I get when I open the software center. I've tried rebooting and running sudo apt-get update but I see no improvement. It worked earlier but I don't know what went wrong since then. I'm using Ubuntu 16.04 final release on a Dell Inspiron 15R. Any advice will be appreciated. Thanks in advance.  EDIT: The problem magically solved itself without me doing anything special (or maybe inadvertently doing something, I don't know). So I'd still like to get to the root of this.
83147
I want to upgrade my Ubuntu 13.04 to Ubuntu 13.10. I'm unable to do via GUI.   [ The reason why I'm unable to do so:  Via software updater, I proceed ahead and click upgrade (for upgrading my OS). I authenticate by providing my password. Then it proceeds and downloads upgrade tool. That time only (while downloading the tool) error message comes "system program problem detected". It then doesn't proceed ahead and I click to report the problem ]  So, I tried via command line but here also I couldn't succeed upgrading my OS.  For the same I ran   $ sudo apt-get update   Then I ran  $ sudo apt-get dist-upgrade   And then:  ravbholua@ravbholua-Aspire-5315:~$ sudo do-release-upgrade Checking for a new Ubuntu release Get:1 Upgrade tool signature [198 B]                                                                                                  Get:2 Upgrade tool [1,135 kB]                                                                                                         Fetched 1,135 kB in 6s (32.9 kB/s)                                                                                                    authenticate 'saucy.tar.gz' against 'saucy.tar.gz.gpg'  gpg exited 2 Debug information:    gpg: Signature made Friday 01 November 2013 10:34:27 AM IST using DSA key ID 437D05B5 gpg: Can't check signature: public key not found  Authentication failed Authenticating the upgrade failed. There may be a problem with the network or with the server.  ravbholua@ravbholua-Aspire-5315:~$    Please suggest how to go ahead and upgrade my OS.
877
When I check for updates, I get a "Failed To Download Repository Information" error.   This is what comes up under details:   W: Failed to fetch gzip:/var/lib/apt/lists/partial/us.archive.ubuntu.com_ubuntu_dists_natty_main_source_Sources  Hash Sum mismatch,  E: Some index files failed to download. They have been ignored, or old ones used instead.
15382
I have been doing so many sudo apt-get update/(dist-)upgrade since yesterday and  something happend - so that I am confused now whether I am using still beta or the stable version.   How do I figure that out?
62876
When doing an apt-get update/upgrade I see that warning  W: Conflicting distribution: https://downloads.plex.tv/repo/deb public InRelease (expected public but got )   I was upgrading to Ubuntu Zesty 17.04 before and do not know how to fix the above. Already have seen ? but there are no suggested fixes for that.  Maybe one of you can give some hints? Thanks!
13138
Attempting to upgrade testing/stretch Debian Linux:  $ sudo apt update  Ign:1 http://dl.google.com/linux/talkplugin/deb stable InRelease Hit:2 http://dl.google.com/linux/talkplugin/deb stable Release                                                                    ... Get:25 http://mirror.vorboss.net/debian unstable/main i386 Packages 2016-03-25-1456.28.pdiff [15.0 kB]              Fetched 686 kB in 7s (89.5 kB/s)                                                                                                                                                         Reading package lists... Done W: gpgv:/var/lib/apt/lists/dl.google.com_linux_talkplugin_deb_dists_stable_Release.gpg: The repository is insufficiently signed by key 4CCA1EAF950CEE4AB83976DCA040830F7FAC5991 (weak digest) W: gpgv:/var/lib/apt/lists/deb.opera.com_opera_dists_stable_InRelease: The repository is insufficiently signed by key 419D0ACF314E8E993F7F92E563F7D4AFF6D61D45 (weak digest) W: Failed to fetch http://dl.google.com/linux/talkplugin/deb/dists/stable/Release  No Hash entry in Release file /var/lib/apt/lists/dl.google.com_linux_talkplugin_deb_dists_stable_Release, which is considered strong enough for security purposes E: Some index files failed to download. They have been ignored, or old ones used instead.  What's wrong? How to fix it?