You’ve perhaps read part I and tried it. Everything works until the moment when you need to electronically sign a document. The web browser barfs an error message, you cannot sign anything.

The good news is that this is super simple to fix.

As for bad news… well, there is none, this time. With these instructions, and the ones from part I, I was able to do a complete tax e-deklaration in Skatteverket’s page, including signing the final submission.

The Problem

You can’t sign things (with the non-repudiation certificate), at least not with the version 4.10.2.16 of Nexus Personal.

The Reason

This is because Firefox lacks the plugin. The Nexus Personal installer copies it into a weird place.

The Solution

Fix the situation by copying the browser plugin to a proper place:

cp /usr/local/lib/personal/libplugins.so ~/.mozilla/plugins/

Then restart Firefox.

Write “about:plugins” to the address bar and ensure Nexus Personal is there. The plugin should claim to accept MIME types such as “application/x-personal-signer”, and all of those should be enabled (all rows have “Yes”).

Now you can fill your skattedeklaration online, AND sign it too. Enjoy!