Reading package lists... Done W: GPG error: http://ppa.launchpad.net trusty InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY D46F45428842CE5E -

Reading package lists... Done W: GPG error: http://ppa.launchpad.net trusty InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY D46F45428842CE5E

Still looking for the solution

Working Solution 2017/07

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys D46F45428842CE5E

Solution

gpg --keyserver hkp://subkeys.pgp.net --recv-keys D46F45428842CE5E


gpg: requesting key 8842CE5E from hkp server subkeys.pgp.net

gpg: keyserver timed out
gpg: keyserver receive failed: keyserver error
 


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