Manage keyring files in instead (see apt-key(8)).Įxecuting: /tmp/apt-key-gpghome.fbmSbmsKSu/gpg.1.sh -keyserver keyserver.ubuntu. I tried to fix the problem with the following command : sudo apt-key adv -keyserver -recv-keys 876292BF7F9C32BF but it doesn´t work and got this message Warning: apt-key is deprecated. They have been ignored, or old ones used instead. W: Failed to fetch The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 876292BF7F9C32BF W: : Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details. GPG error: InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 876292BF7F9C32BF If any package needs an upgrade, it can be achieved using the sudo apt upgrade command.

The repository is not updated and the previous index files will be used. Open the terminal of your OS and run the below-stated command in it: sudo apt update As the snippet shows, the repository is updated, and the number of upgradeable packages is also listed. I got this error when i run: sudo apt update in terminal on ubuntu 22.04 W: An error occurred during the signature verification.

Sudo get apt update