SCardConnect (winscard.dll) is always returning error

Question

I am trying to connect a smart card reader using following code

retCode = ModWinsCard.SCardConnect(hContext, cbReader.SelectedItem.ToString(), ModWinsCard.SCARD_SHARE_SHARED, ModWinsCard.SCARD_PROTOCOL_T0 | ModWinsCard.SCARD_PROTOCOL_T1, ref hCard, ref Protocol);

But it is always returning some error code. First it was returning 6 after changing the target platform to x86 now it is returning -2146434967.

Any idea why its behaving so?

You may have more success considering the error code as unsigned (hex): 0x80100069; this means "The smart card has been removed, so that further communication is not possible". ?? — guidot, Jul 21 '14 at 10:19
Yes you are right. This is due to the removal of Tag from the reader. Thanks — hellowahab, Jul 21 '14 at 11:49
I have the same problem. Could you put your solution? Thanks — A.Vila, Nov 20 '14 at 18:42
@A.Vila I have added an answer, let me know if this resolves your issue — hellowahab, Nov 21 '14 at 09:39

score 3 · Answer 1 · answered Feb 05 '15 at 12:37

3

Same code, returning 6 instead of 0.

Setting card on reader did not help until I did not change build option to x86.

Thank You for posting that changing target platform returned -2146434967 (0x80100069 - SCARD_W_REMOVED_CARD).

answered Feb 05 '15 at 12:37

boj4n

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score 2 · Accepted Answer · answered Nov 21 '14 at 05:00

2

Just for other to benefit:- This was due to the removal of tag from the reader.

You can keep you tag placed on the reader this error will get removed.

answered Nov 21 '14 at 05:00

hellowahab

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SCardConnect (winscard.dll) is always returning error

2 Answers2