Same here. I'm so glad this post popped up today. I've been having the issue for a few days now, and nothing seems to be working. I was starting to come to the same conclusion as you, but I'm still in the kinda-new-to-linux category, so I wasn't confident. One thing I noticed is that the dates at this link don't seem to be coincidental: [URL] The deb install is 2 years and 7 days old at this point. I've been getting this error for about a week. I wonder if some cert expired because they didn't renew it. Edit: I emailed ftpmaster[NAME].com, but I got an auto-reply back that the address doesn't exist. Womp womp. I guess reaching out to Dell is the next course of action. Edit 2: I emailed security[NAME].com because it looks like they might actually be the ones who tackle this stuff. I'll report back with any update.   Edit 3: I got a response from Canonical. They are working on getting it fixed. They said "Thanks for letting us know - I got in contact with our OEM enablement team who manage this repo - someone is aware of the issue and is working on a fix, so hopefully this is resolved soon."
Hi, I've been having the following error: $ sudo apt update...Err:23 [URL] bionic-dell Release.gpgThe following signatures were invalid: BADSIG F9FDA6BED73CDC22 Canonical Archive Automatic Signing Key  According to [URL]  I should contact the maintainer, but I'm more into the idea that Dell should go and talk to Canonical about that. Also, I do not recall messing around with the apt sources lately. They have been working just fine for a long time until now. Any idea how to solve it?
dell.archive.canonical.com invalid signature