Now go ahead and re-run the apt-get update command to update your repositories 👌 $ sudo apt-get update Run the command to find outdated keys again and ensure an empty list. Sweet! Processing the key finished and your system received a new signature. Gpg: key 91FA4AD5: 'MongoDB 3.6 Release Signing Key ' 1 new signature Gpg: requesting key 91FA4AD5 from hkp server Use the following command and replace the placeholder with your key’s value (the one you copied from above): $ sudo apt-key adv -keyserver hkp://:80 -recv-keys įor the expired MongoDB GPG key, the command and output looks like this: $ sudo apt-key adv -keyserver hkp://:80 -recv-keys 91FA4AD5Įxecuting: /tmp/tmp.XC8EiRvH3E/gpg.1.sh -keyserver Now that you know which key expired, go ahead and renew it. Copy that part, because you need it in the second step.Īt the time of writing this tutorial, it’s December 18th, 2018 and the key expired four days ago (December 14th, 2018). This resulting list prints all packages with related key details. Use the command below if you want to filter for expired keys: $ sudo apt-key list | grep -A 1 expired You can run apt-key list to print a list of all installed keys.

Step 1: Find the Expired Keyįind the expired key from apt’s key list. Here are the steps to renew an expired key. To fix this issue, you need to rotate the key on your system. The GPG key of the MongoDB repository expired on this server. They have been ignored, or old ones used instead. W: Failed to fetch The following signatures were invalid: KEYEXPIRED 1544811256 GPG error: xenial/mongodb-org/3.6 Release: The following signatures were invalid: KEYEXPIRED 1544811256 The repository is not updated and the previous index files will be used. W: An error occurred during the signature verification. The following signatures were invalid: KEYEXPIRED 1544811256 You’ll recognize the following output while running apt-get update on your Ubuntu 16.04 system: $ sudo apt-get updateĮrr:17 xenial/mongodb-org/3.6 Release.gpg Use “which” in Linux to find the Location of an Exetable How to Show Your Elasticsearch Version on Ubuntu/Debian Install a Specific Version with apt-get on Ubuntu/Debianįix Ubuntu/Debian apt-get “KEYEXPIRED: The following signatures were invalid”

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