Problem using Mozilla Firefox 84
Please be informed that Firefox 84 has a problem with the normal operation of the Network Security Services (NSS) component, which is responsible for communicating and working with smart cards. The problem has been fixed by Mozilla in the next version of Firefox 84.0.1
To continue using your smart card normally, we recommend to update the program to the latest version.
Update Firefox to the latest release
By default, Firefox updates automatically. You can always check for updates at any time, in which case an update is downloaded but not installed until you restart Firefox.
1. Click the menu button, click Help and select About Firefox.
2. The About Mozilla Firefox window opens. Firefox will check for updates and download them automatically.
3. When the download is complete, click Restart to update Firefox.