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Unable to load PKCS11 module

  • 3 svar
  • 1 har dette problem
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  • Seneste svar af BZ

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I'm using Firefox 85.0.2 on macOS 11.2.1 and I can't load the PKCS11 Device Driver for my eSign. All the necessary drivers are installed on the system and the Charismatics Scard Utility recognises the devices properly. What's even stranger, is that I was able to add the device in Thunderbird (78.7.1).

Can anyone help me figure out what's wrong and get the device working, please?


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I just tried version 86 and ran into the same issue. However, with version 82 the module was loaded successfully.


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Does it help if you set this pref on the about:config page ?

  • security.osclientcerts.autoload = true


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Hello cor-el,

Unfortunately changing this settings doesn't seem to have the needed effect: I tried it on a fresh Firefox 86 and still got "Unable to add module".


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