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

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

EXPKEYSIG errors happen when a public key, crucial for verifying a package's integrity, has expired. In this guide, you'll find specific instructions to fix this error for your Linux distribution, focusing on key ID 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:

The following signatures were invalid: EXPKEYSIG 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: The following signatures were invalid: EXPKEYSIG 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 EXPKEYSIG error.

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