E_AUTH_BAD_DEVICE_KEY_OR_PKCS12

I used to be able to open ACSM files without further ado.

But now I get the above indicated error message.

I try to erase the computer authorisation. I cannot erase it. It only says, unable to erase. Try later.

Can you tell me what to do?

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Participant

Found the instruction I needed a few topics below. Computer authorisation erased and newly set up and the ebook shows up as it should ;0)

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