I've contacted Yubico to review this ticket.

Hi, that works as advertised. If this is the best solution yubikey permits us I am ok with it.

• There was same problem in yubico-piv-tool and it was solved by detecting error state (0x80100068) and reconnecting to the smart card if necessary [1]
• There is also a thread in OpenSC discussing this issue [2] and relevant PRs [3]
• I also found a project that claims to fix SCARD_W_RESET_CARD by disabling exclusive access to the card before asking for PIN (and then they enable exclusive access again) [4]

Yeah, this is better, we got apdu_get_status => sw=0x0 status=7 and I can auth with this version as usual. After sleep-wake cycle it would however fail with pcsc_transmit failed: reset card (0x80100068). Logs attached.

Thanks, this version of scdaemon executes.

@gniibe it seems the patched scdaemon.exe is 64 bit executable and it requires libassuan6-0.dll. However I got installed 32 bit version of gpg that only has incompatible libassuan-0.dll. I scanned whole computer for the missing lib, skimmed your ftp for 64 bit binaries and looked into gpg4win installer to find it, but no luck. There is also libassuan github repo, but I would like to avoid building the dll myself; there would probably be more than one dll to build anyway.

@werner there had to be some mix up, as the log snippet is not mine.