Linked Questions

5
votes
4answers
16k views

Update manager won't install from un-authenticated sources [duplicate]

My update manager shows updates available. When I click on install updates it shows the following and does not update. The action would require the installation of packages from not authenticated ...
6
votes
3answers
4k views

Can't install vlc and other software : packages not coming from authenticated sources [duplicate]

After installing Ubuntu 11.10 last week I couldn't install any mp3 or videoplayers such as vlc or any others. They show me something about a failure to install packages, and when I click on details I ...
1
vote
0answers
3k views

The action would require the installation of packages from not authenticated sources [duplicate]

× 5207 The action would require the installation of packages from not authenticated sources. mplayer-gui mplayer-skins from the ubuntu software center I could not watch any .AVI without it, and ...
-1
votes
1answer
2k views

My system update requires installation of untrusted packages [duplicate]

I'm trying to install the latest updates from my software manager and it wants me to install untrusted packages? Should I install the packages, if so, how? It just says it requires the untrusted ...
1
vote
1answer
829 views

Ubuntu updates service stopped working [duplicate]

Update-manager Requires instalation of untrusted packages Details apport apport-gtk gnome-settings-daemon ifupdown libldap-2.4-2 libpulse-mainloop-glib0 libpulse0 libpulsedsp pulseaudio ...
0
votes
1answer
267 views

How do I install Skype on Ubuntu 13.04? - solution found? [duplicate]

I am getting the following error message from the Ubuntu software centre when trying to install Skype for Linux on my Ubuntu 13.04 64 but system: Requires installation of untrusted package : ...
0
votes
1answer
88 views

Why am I unable to update from Software Updater? [duplicate]

I am unable to update through software updater. After clicking install now, it shows "requires installation from untrusted package". Then there is two options: Settings and OK. I click OK but the ...
0
votes
0answers
80 views

automatic updates [duplicate]

I get the error message "requires installation of untrusted packages" every time I try to update after entering my password. There are now 55.4MB of updates. Never happened before and the updates ...
0
votes
0answers
29 views

software update corrects error [duplicate]

I've got this message everytime i try to install update to my ubuntu... "Requires installation of untrusted packages The action would require the installation of packages from not authenticated ...
-1
votes
1answer
19 views

whats the solution of ubuntu software center [duplicate]

I tried installing VLC Player yesterday, and I got the Requires installation of untrusted packages error. I searched for hours for a solution to this problem whats the solution? pleas
71
votes
8answers
83k views

How do I fix the GPG error “NO_PUBKEY”?

I added some extra repositories with the Software Sources program. But when I reload the package database, I get an error like the following: GPG error [...] NO_PUBKEY [...] I know I can fix ...
42
votes
7answers
63k views

“Require Installation Of Untrusted Packages” while upgrading with the update manager

It didn't fixed the error. So, how do I fix my GUI update? For every software I have to install it from command line because I got same error when install software from Ubuntu Software Center.
5
votes
2answers
15k views

Not able to install software on Ubuntu 12.10 [duplicate]

I am newbie with Ubuntu.I am trying to download Okular pdf reader from Software Center but I am getting some error. At first it was asking for installation of packages from not authenticated ...

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