firefox - Unable to login via smart card pin on company websites

I'm not able to login via smart card PIN on enterprise websites. This works in other browsers Chrome/Brave/Edge etc.

Secure connection failed A PKCS #11 module returned CKG_GENERAL_ERROR, indicating that an unrecoverable error has occurred. Error code: SEC_ERROR_PKCS11_GENERAL_ERROR 

I'm using TPM 2.0.

2 Answers

Step 1

Install OpenSC, which is an open source driver for smart card pin which works with firefox. Install the Windows MSI 64 bit installer.

Step 2

Follow the instructions here, to add the driver to firefox and start using.

Installing OpenSC PKCS#11 Module in Firefox, Step by Step · OpenSC/OpenSC Wiki · GitHub

This is what it looks like when the driver is loaded into firefox,

Step 3

Restart the browser and try to login again to your company site.

You will now get a prompt to input your PIN.

It's not useful to install OpenSC.
[1]: [2]:

The Path must be : C:\Windows\System32\cardos11_64.dll Test using "connexion" button.

I'm using this all days with my entreprize PKI card.