Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Updates in my system are not getting installed..

sudo apt-get install is giving the following error:-

W: GPG error: precise-cdh4 Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 327574EE02A818DD

Update Manager is showing different error as shown in ScreenShot enter image description here

share|improve this question
up vote 3 down vote accepted

Open a terminal and add the missing key with below command

sudo apt-key adv --recv-key --keyserver 327574EE02A818DD

Then run

sudo apt-get update
share|improve this answer
thanks a ton for your valuable help :D – vipin8169 Nov 8 '12 at 9:55

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.