NO_PUBKEY 3B4FE6ACC0B21F32 Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>

Welcome to the detailed guide for resolving NO_PUBKEY errors for key ID 3B4FE6ACC0B21F32, also known as Ubuntu Archive Automatic Signing Key Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>.

NO_PUBKEY errors occur when a public key necessary to verify a package's integrity is missing. In this guide, you'll find specific instructions to fix this error for your Linux distribution, with a focus on key ID 3B4FE6ACC0B21F32 Ubuntu Archive Automatic Signing Key Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>.

If you see errors like below, you can use CLI options by picking your Linux distro:

NO_PUBKEY 3B4FE6ACC0B21F32 Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>

Another error type is as follows:

W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://example.com/packages: NO_PUBKEY 3B4FE6ACC0B21F32 Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>

Commands

Select your Linux distribution from the dropdown to see the specific commands needed to fix the NOPUBKEY error.

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3B4FE6ACC0B21F32
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