Please describe your issue or request: The Ubuntu GPG package signing key is expired. root@vroomfondel:~# gpg --show-keys ai-workbench-desktop-key.gpg pub rsa3072 2024-12-12 [SC] [expired: 2025-12-12] 52ECDF6597CFBD86D5BF4DB3CD63F8B21266DE3C uid svc-workbench <svc-wor…

Thank you for the fast fix! 😎

The fix did not work for me - it still says the key is invalid.

Proposed fix doesn’t work for me either

Could you run a check via gpg --show-keys? root@vroomfondel:~# gpg --show-keys /usr/share/keyrings/ai-workbench-desktop-key.gpg pub rsa3072 2024-12-12 [SC] [expires: 2027-12-13] 52ECDF6597CFBD86D5BF4DB3CD63F8B21266DE3C uid svc-workbench <svc-workbench@nvidia.com> And j…

I have the same key. It looks like the proper key is there, it just isn’t recognized as valid despite it having the 2027-12-13 expire date.

@andrew.sheahen @youp The linked forum post marked as the solution addresses the AI Workbench installation in DGX Spark and GB10 systems, which is configured slightly different. If you installed the AI Workbench apt repo following the User Guide , you need to run a slightly different command: curl…

The fix for Ubuntu repo signature invalid: EXPKEYSIG CD63F8B21266DE3C svc-workbench sudo apt update (still see the error) sudo apt full-upgrade (installs a new key) sudo apt update (no error)

This did not work for me - the error persists.

Then you should check the config of that repo. May be it is pointing to another path for that key. root@vroomfondel:~# cd /etc/apt/sources.list.d/ root@vroomfondel:/etc/apt/sources.list.d# grep workbench * ai-workbench-desktop.sources:URIs: https://workbench.download.nvidia.com/stable/linux/debia…

Ubuntu repo signature invalid: EXPKEYSIG CD63F8B21266DE3C svc-workbench <svc-workbench@nvidia.com>

AI & Data Science NVIDIA AI Workbench

dkleissas December 13, 2025, 8:26pm 2

@cosinus - see post here for more information: DGX Spark apt update failure (EXPKEYSIG)

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Ubuntu repo signature invalid: EXPKEYSIG CD63F8B21266DE3C svc-workbench <svc-workbench@nvidia.com>

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