The following signatures were invalid: EXPKEYSIG 82CC8797C838DCFD

[joshenders]

Just a heads up for anybody else encountering this issue on Debian, the apt key with signature 4EFC 5906 96CB 15B8 7C73 A3AD 82CC 8797 C838 DCFD expired on 2025-08-22.

Which is why you might see the following errors on an apt update:

W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://pkgs.zabbly.com/incus/stable bookworm InRelease: The following signatures were invalid: EXPKEYSIG 82CC8797C838DCFD Zabbly Kernel Builds <info@zabbly.com>
W: Failed to fetch https://pkgs.zabbly.com/incus/stable/dists/bookworm/InRelease  The following signatures were invalid: EXPKEYSIG 82CC8797C838DCFD Zabbly Kernel Builds <info@zabbly.com>
W: Some index files failed to download. They have been ignored, or old ones used instead.

This is easily fixed by just installing the latest key per the instructions on github:

wget -O /etc/apt/keyrings/zabbly.asc https://pkgs.zabbly.com/key.asc

Hope this helps someone!

[stgraber (Stéphane Graber)]

There’s a pinned topic on the forum about it

Zabbly repository signing key needs refreshing

When I first set up the Zabbly repositories for kernel builds, Incus and ZFS, I created a GPG key with a 2 years validity. Those 2 years are going to be up in just a few days (August 22nd). I’ve updated the key, renewing it for 5 years (new expiry is August 18th 2030) but existing systems need to be refreshed with the new key to keep getting updates. Here is how to do it safely: 1. Check the currently trusted key root@d13:~# cat /etc/apt/keyrings/zabbly.asc | gpg --import-options show-only --…

[candlerb (Brian Candler)]

Although strangely, the pinning doesn’t seem to be working. If I go to https://discuss.linuxcontainers.org/ I don’t see the thread there.

I remembered I had seen it, but when I came back again I had to search for it.

[simos (Simos Xenitellis)]

When you are logged in to the discussion forum, you do not get to see the pinned posts.

In my case it shows the Latest posts, and then only some of the pinned posts. In the last few days I would see the pinned posts for the new releases of Incus, LXC. Are different types of pinned posts?

[stgraber (Stéphane Graber)]

It may be a user setting of some kind?

Here I see:

[simos (Simos Xenitellis)]

Most likely it was this, in the Settings → Interface → Automatically unpin topics when I reach the bottom.

Ι disabled it, but the existing pinned topics do not show. Most likely only newly pinned topics will stay pinned.