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I've been getting this reoccurring error whenever I "sudo apt-get update" on Ubuntu 12.04

W: GPG error: stable InRelease: The following signatures 
couldn't be verified because the public key is not available: NO_PUBKEY 082CCEDF94558F59
W: Failed to fetch
dev/ppa/ubuntu/dists/precise/main/source/Sources  404  Not Found

W: Failed to fetch
i386/Packages  404  Not Found

I'm a bit new to ubuntu, but I wanted to figure out how I can go about fixing this issue.

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migrated from Nov 13 '12 at 19:35

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Don't forget to mark the answer as correct if it solved your problem :-) – JacobusR Dec 5 '12 at 15:55

You don't seem to have the spotify signing key. Try;

sudo apt-key adv --keyserver --recv-keys 082CCEDF94558F59

and update again. Spotify also has another key (for newer versions?)

sudo apt-key adv --keyserver --recv-keys 94558F59

but that doesn't seem to be what your apt is complaining about.

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Thank Joachim. That was able to clear up the Spotify error. Do you have any idea why my Bazaar Explorer is throwing errors? – Paul Nov 13 '12 at 21:29
It's okay. I was able to figure it out. There were a few add-ons available on the Ubuntu Software Center for the Explorer that were necessary. – Paul Nov 13 '12 at 23:40

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