Fixing 'cups-pki-invalid' printing error in Linux Mint/Ubuntu

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Today on my Linux Mint install (21.2) I got the error cups-pki-invalid when trying to print a document. In this short blog post, we’re going to fix it, without having to remove/re-install printers. A quick Google search shows that this is likely due to an expired certificate, but we knew that anyway with “pki” in the error code, didn’t we? Why this certificate doesn’t…

Read on ryansouthgate.com ↗