Can I use Clicksign with the Class 2 software certificate of the FNMT?
In the case of having previously installed the certificate in Windows, the easiest way is to enable the operation with CryptoApi (the natural repository in Windows).
By default it is activated, however if you want to check it and make changes you should only access the Clicksign configuration panel.
Access options from the clicksign menu.
In the Settings window, IDs and devices tab, check that the box "Use my Windows operating system certificates", in case it is checked you can see that in the list that is under "Add / Remove devices and IDs "Windows (CryptoAPI)" appears.