I don't think that it is --pcsc-shared related; Andre reported that he noticed such a behaviour before we introduced this.

We should add a comment at the caller side, that this takes a lock in apdu.c.

Keeping the lock over the call to the function does not look very robust to me. This is why I removed it. And since then PC/SC worked on Windows for me. Modulo this:
All these changes don't tackle the real problem that windows gets struck in a removed-card state.

This is better name. My point was that if we ever use that to create such a field the developer should not assume that arbitrary REs can be used here. We need to have some practical value here and I would prefer to see only the domain name. However, OpenPGP allows for arbitrary REs and thus we may see them here. This is problematic but we can't do much about it.

That would required that we also add an option --enable-ccid-driver - better tell the macOS folks to put diable-ccid-driver into /etc/gnupg/scdaemon.conf

FWIW, I think that it is a Bad Thing to use unreleased stuff from 1.8 for Debian packages. Only released versions sshould be used or patches we explicitly made to fix a bug. At the very least Andreas should have asked upstream whether this commit should be used for Sid.

Thanks for testing. I hope to get 2.3.2 out in two weeks.

RFC-5280 states in 4.2.1.3 for Key Usage:

The error code is: No Readers Available. With the latest version you should have seen that string.

Meanwhile we did some more tests on Windows and so you many want to try our betas at

Can you please clarify this point: If you run on Unix with --disable-ccid-driver, do you get the same behavior as on Windows?

Run gpg --debug ipc --card-status to quickly see the communication with the scdaemon.

Please try to verify on the command line (cmd.exe):

The curve is not defined to be used for ECDH (encryption); in fact it should in general only be used with the EdDSA
algorithm. You need to use "Key-Type: eddsa". Note that the EdDSA signing algorithm is different than the commonly used ECDSA signing algorithm.

Can you please port this also to 1.8?

You can't use ecdh with ed25519.

Please install the Gnome Key Ring prompter tool or use the plain GTK pinentry.

Please have a look at the log:

You are right. The problem is that in a development version we use an envvar to locate the programs, so there is usually no problem because the software has already been installed and the final test doesn't catch this. We should add a version check to all components to catch such problems.

Given that we don't yet support TPM for Windows you should go ahead and apply this patch. tpm should also be removed from the list of components.

6f03 = Data with specified length not supported.
Needs to be fixed in GnuPG :-(

is more important