Linux [SOLVED] The following signatures were invalid: EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key March 17, 2024 / March 17, 2024 by Philip Newman | Leave a Comment Here is the solution if you’ve got the following error message when updating package lists on Debian (apt-get update): The following signatures were invalid: EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key The sury.org Debian package repository has changed its package signing key. To fix the error, just download the new key: Finally, run package update again: […] Read more ยป apt-key Debian Linux