Thanks! We will try this out and update you with the results.

We got a bit further, not sure what debug level you want, guru I've found to be too excessive:

Can you please try this patch:

I guess we should put this on the agenda for our next RL meeting.

That is an old bug report with a couple of fixes introduced over the years. As of now we sometimes see hangs on Windows on our test VMs. The common cause here seems to be USB card reader issues. Let's close this bug and wait for another bug report with current software versions.

Since 2.2.20 we had these items in the NEWS

After applying patch to nPth 1.6 no semaphore leaks detected. Tested with GnuPG-2.3.3.
There has been positive feedback from production environment as well.

@werner I have just tested this, and although it fixed it for one certificate, this one in this issue still fails. Here is the new debug given

Fixed in master.

Thanks for your report. It seems the linker for Android is more strict.

Fixed in GnuPG 2.4.4.

AFAIK, we don't have any option to control the lower-level detail of GnuTLS for dirmngr of GnuPG.

I think there is a few things to consider.

Can we chop this in two (the KPasswordLineEdit thing and the rest) ? I think the rest can go in straight away, but I'd like to play around a bit with KPLE myself.

Setting a date on the command line is in UTC, displayed in Kleopatra is the corresponding local date which might therefore be one day of. This is as intended and the same for dates before or after the Y2038 cut off.
-> Works with Gpg4win-4.3.0

Thanks for taking time to look into this. You have clearly identified the issue.

Simplify layout