GPG error when pulling updates from

Did an aptitude update on a Debian Lenny box and got:

W: GPG error: lenny/updates Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY AED4B06F473041FA
W: You may want to run apt-get update to correct these problems

According to Debian News, the GPG key expired:

This key rollover is a normal maintenance task and was started in August 2010. For security reasons Debian's archive signing keys regularly expire after three years.


sudo aptitude install debian-archive-keyring

The following packages will be upgraded:
1 packages upgraded, 0 newly installed, 0 to remove and 59 not upgraded.
Unpacking replacement debian-archive-keyring ...
Setting up debian-archive-keyring (2010.08.28~lenny1) ...
gpg: key F42584E6: "Lenny Stable Release Key " not changed
gpg: key 55BE302B: "Debian Archive Automatic Signing Key (5.0/lenny) " not changed
gpg: key 6D849617: "Debian-Volatile Archive Automatic Signing Key (5.0/lenny)" not changed
gpg: key B98321F9: public key "Squeeze Stable Release Key " imported
gpg: key 473041FA: public key "Debian Archive Automatic Signing Key (6.0/squeeze) " imported
gpg: Total number processed: 5
gpg:               imported: 2  (RSA: 2)
gpg:              unchanged: 3
gpg: no ultimately trusted keys found

Now the "NO_PUBKEY" error is gone and I can go one with installing my updates.


  • 1. Fred replies at 4th April 2011, 3:53 pm :

    Ok… wow. Finally problem solved!!

  • 2. bervalk replies at 12th June 2011, 1:16 am :


  • 3. Nabi replies at 18th July 2011, 11:23 am :

    Thank you for your tips.
    It was too useful for me.

  • 4. Mikexad replies at 20th August 2011, 11:06 am :


  • 5. ofonime replies at 15th March 2012, 4:30 am :

    it didnt work same error msg

  • 6. kelaslinux replies at 20th June 2012, 6:35 am :

    its working! thanks

  • 7. Lorenzo Marano replies at 23rd May 2013, 3:11 am :


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