Hello Frank,
On Sat, 4 May 2019 11:09:22 -0600 Frank Cox theatre@sasktel.net wrote:
The currently available fix for Firefox doesn't work with ESR, but there's a temporary fix that works. At least, it's working for me:
Go to about:config and set xpinstall.signatures.required to false.
[snip]
And extensions.langpacks.signatures.required for language packs.
Regards,