Ubuntu – GPG error: The following signatures couldn’t be verified because the public key is not available

gnupg

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How do I fix the GPG error “NO_PUBKEY”?

after sudo apt-get update I get this error:

W: GPG error: http://archive.hivemind.me all Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3C962022012520A0

Best Answer

Run the following in your terminal,

 sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3C962022012520A0 
 sudo apt-get update

References: How do I fix the GPG error "NO_PUBKEY"?

You need to replace the key (3C962022...) with the one that is displayed in the error message in the terminal.

Related Solutions

Ubuntu – How to fix the GPG error “NO_PUBKEY”

By far the simplest way to handle this now is with Y-PPA-Manager (which now integrates the launchpad-getkeys script with a graphical interface).

To install it, first add the webupd8 repository for this program:
```
sudo add-apt-repository ppa:webupd8team/y-ppa-manager
```

Update your software list and install Y-PPA-Manager:

sudo apt-get update
sudo apt-get install y-ppa-manager

Run y-ppa-manager (i.e. type y-ppa-manager then press enter key).
When the main y-ppa-manager window appears, click on "Advanced."
From the list of advanced tasks, select "Try to import all missing GPG keys" and click OK.

You're done! As the warning dialog says when you start the operation, it may take quite a while (about 2 minutes for me) depending on how many PPA's you have and the speed of your connection.

Ubuntu – “GPG error” while running “sudo apt-fast update”

Follow this answer to remove all the GPG error.
Then follow this answer to automatically remove all the 404 Not found PPA's.

Best Answer

Related Solutions

Ubuntu – How to fix the GPG error “NO_PUBKEY”

Ubuntu – “GPG error” while running “sudo apt-fast update”

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