The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository <[email protected]>

Recently, I decided to upgrade my Kali Linux but the apt update command returned the following error:

The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository <[email protected]>

 How to fix this error

To fix this error, follow these steps:

• Visit this page and download the .deb package as shown in the screenshot below. If you want to download directly via terminal, simply copy the package link.
  
• Now open terminal, navigate to the directory where you downloaded the package. If you copied the link, use the wget command to download and install it with dpkg -i command as shown below:

  wget https://http.kali.org/kali/pool/main/k/kali-archive-keyring/kali-archive-keyring_2022.1_all.deb
  sudo dpkg -i kali-archive-keyring_2022.1_all.deb

  

• Once installed, you can go ahead and upgrade your Kali Linux.

  sudo apt update
  sudo apt full-upgrade -y

The error should now be gone and you will be able to upgrade your Kali Linux without any problem.