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Recently I had a lot of GPG errors with the following message

W: GPG error: http://ppa.launchpad.net trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY *****************

I removed them with using What is the easiest way to resolve apt-get BADSIG GPG errors? and with the help from other sites. But now every time I add new PPA and try to update I got the GPG Error for the last added PPA.

Using Y-PPA > Advanced > Try to import all missing GPG keys removes the error/s but it will show again for every new PPA added. Can someone tell me why I got GPG error every time and how to fix it permanently.

using Ubuntu 14.04 x64 EDIT: Problem solved. I was missing /etc/apt/trusted.gpg.d

Tosho
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1 Answers1

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The problem is that you have too many ppas.

Apt can only handle 40 keys in /etc/apt/trusted.gpg.d.

Delete some gpg keys and ppas.

See here for some more info.

EDIT

Because you have no /etc/apt/trusted.gpg.d directory, just run the following command to fix the issue:

sudo mkdir /etc/apt/trusted.gpg.d
mchid
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