EXPKEYSIG debian ubuntu

Fix EXPKEYSIG 78BD65473CB3BD13

Google Chrome <linux-packages-keymaster@google.com> — by Google

Official Key Page: https://www.google.com/linuxrepositories/
Error message 
EXPKEYSIG 78BD65473CB3BD13 Google Chrome <linux-packages-keymaster@google.com>

Your distro

Fix commands for Fedora

Method 1 Import from official URL

Imports the GPG key directly from the vendor and refreshes the package cache.

Fedora — bash
$ sudo rpm --import https://dl.google.com/linux/linux_signing_key.pub
$ sudo dnf check-update
Official documentation

Method 2 Import from keyserver via GnuPG

Fetches the key from a public keyserver, exports it in ASCII armor format, then imports into the RPM database.

Fedora — bash
$ gpg --keyserver hkps://keys.openpgp.org --recv-keys 78BD65473CB3BD13
$ gpg --export --armor 78BD65473CB3BD13 | sudo rpm --import -
$ sudo dnf check-update

Additional notes

Google rotates its Linux repo signing key periodically. If this fix stops working, check the official page for the current key fingerprint.

After importing the key

Run sudo apt-get update (or your distro's equivalent) again. If successful you should see Hit: lines with no EXPKEYSIG warnings. Still broken? Check that your /etc/apt/sources.list.d/ entry references the correct [signed-by=…] keyring path.