# Warning/Error during system update (Public keyring not found / signature is unknown trust)

**URL:** <https://forum.endeavouros.com/t/warning-error-during-system-update-public-keyring-not-found-signature-is-unknown-trust/45883>\
**Category:** Pacman & AUR helpers\
**Created:** [September 24, 2023, 3:51am UTC](https://forum.endeavouros.com/t/warning-error-during-system-update-public-keyring-not-found-signature-is-unknown-trust/45883 "2023-09-24T03:51:31Z")\
**Posts on this page:** 1\
**Showing post:** 13

<div class="post-metadata">

**Author:** ![anon53396576](https://forum.endeavouros.com/letter_avatar_proxy/v4/letter/a/a698b9/32.png) [@anon53396576](https://forum.endeavouros.com/u/anon53396576)\
**Post date:** [September 24, 2023, 3:01pm UTC](https://forum.endeavouros.com/t/warning-error-during-system-update-public-keyring-not-found-signature-is-unknown-trust/45883/13 "2023-09-24T15:01:40Z")

</div>

I always follow this when these issues pop up:

[[FAQ] Issues with “signature is marginal trust”, “signature is unknown trust”, or “invalid or corrupted package” - General system / Newbie - EndeavourOS](https://forum.endeavouros.com/t/faq-issues-with-signature-is-marginal-trust-signature-is-unknown-trust-or-invalid-or-corrupted-package/6756)

---

_[View the full topic](https://forum.endeavouros.com/t/warning-error-during-system-update-public-keyring-not-found-signature-is-unknown-trust/45883)._