Looking for help here. I created a new Firefox profile and wanted to load the Bypass Paywalls Clean Add-on/Extension from the XPI file. So I did what I've always done and got the message displayed above.
Then I went into about:config and changed both xpinstall.whitelist.required and xpinstall.signatures.required to false. Fully exited and restarted the browser but still, no dice.
Anyone know how to fix this?
SOLUTION: go to extensions.blocklist.enabled and turn it to false
If they didn't have safeguarding in place, I'd be more worried. As with all things Firefox, it can be overridden.
"This isn't safe" is very different from "I've arbitrarily decided you shouldn't be able to use that"