I can reproduce it using Stuart's script from https://lists.gnupg.org/pipermail/gcrypt-devel/2026-February/006031.html.

Please tell us the information of your environment.
What the versions of gpg and gpg-agent?

Here is an attempt of mine this week:

diff --git a/g10/call-agent.c b/g10/call-agent.c
index 5e13a3e52..8949fad17 100644
--- a/g10/call-agent.c
+++ b/g10/call-agent.c
@@ -3290,13 +3290,14 @@ confirm_status_cb (void *opaque, const char *line)
    message.  If FORCE is true the agent is advised not to ask for
    confirmation. */
 gpg_error_t
-agent_delete_key (ctrl_t ctrl, const char *hexkeygrip, const char *desc,
+agent_delete_key (ctrl_t ctrl, const char *keygrip, const char *desc,
                   int force)
 {
   gpg_error_t err;
   char line[ASSUAN_LINELENGTH];
   struct default_inq_parm_s dfltparm;
   struct confirm_parm_s confirm_parm;
+  const char *keygrip2 = NULL;

We have seen the same thing on amd64 (x86_64) linux: https://bugs.gentoo.org/969501

Please do not use the portable installation - it is dangerous to use it. We will eventually remove this option.

I also updated the software page. Thanks for the hint.

That was fast, thank you.
Can you please update https://www.gnupg.org/related_software/gpa/ as well, or is there a better page to use as a homepage link for gpa?

Done. See T7449

Noteworthy changes in version 0.11.1 (2026-02-12)

This ticket is now obsolete, as we will force the setting of autoencryptUntrusted=0 via the registry in Ticket T8090

The fix causes a regression. Reported: https://lists.gnupg.org/pipermail/gnupg-devel/2026-February/036218.html

This is not 2.5-only.

Maybe we could show instead the text "No keyserver is configured."? Need not be in the same place. This would also be helpful in the other case, where you go to the search via "Lookup on Server".

Make all table column headings accessible (see Update 2025-10-27).

Forget my comment above. Or consider it as the "before" part of the task description…

Fixed and backported for VSD 3.4.

Hi, the test is green with rG86baca6e62b3 for both 2038-01-01 and 2105-01-01. Thanks!

The settings should work again. They are described at https://docs.kde.org/trunk_kf6/en/kleopatra/kleopatra/admin.html#admin-certificate-request-wizard-keys , but note that the documentation is severely outdated. Note that those settings are not officially supported by GnuPG (VS-)Desktop (see https://gnupg.com/vsd/kleopatra-settings.html).

Should work now.

This was fixed in Qt 6.10.0 by adding compatibility code that's "hidden" behind a compiler flag, i.e. we just need to enable this compiler flag. See https://codereview.qt-project.org/c/qt/qtbase/+/629255 for details.

For the time being I "upgraded 5.0.1 to 4.4.1 (in the new directory), and then Kleopatra started again.
When upgrading that installation again to 5.0.1, Kleopatra does not start (same error message as before).

Also: When I click "Abort" ("Abbrechen"), the dialog disappeared, but the main windows does not show any progress: Specifically it does not abort.
I had to press "Abort" ("Abbrechen") in the main window; then the upgrade aborted.
When retrying (and confirming that I don't want to install as Administrator (actually I cannot), the proposed target directory still is "C:\Program Files\Gpg4win".
When locating the previous installation directory (it seems it was a subdirectory of %USERPROFIL%\Downloads) the upgrade succeeded, but Kleopatra fails to start.
It want a bin\Qt6Core.dll, bit in the bin directory there is only a Qt5Corew.dll dated " 14. ‎Juli ‎2023, ‏‎13:23:40".
When retrying the installation/upgrade it announced to upgrade 5.0.1, but then did seemingly nothing (I guess as the version was estimated to "be current").
It seems some "reinstall/repair" option is missing.

No, OpenBSD's implementation of POSIX semaphore is different to NetBSD.
(It doesn't support PSHARED=1.)

Possibly, it is related to the NetBSD failure of T8065.
If importing the secret key fails (which invokes gpg-agent), decryption cannot be succeeded.
I will check OpenBSD implementation of POSIX semaphore, if it's similar to NetBSD one.

We forgot to update the tooltip when the default keyserver was removed in gpg 2.5.3. This has already been fixed in the meantime. Sorry for the inconvenience!

Fixed for KF6 versions.

I'm pretty sure that this has already been fixed with the changes made for T8083: Kleopatra: Use blue icon for Gpg4win and GPD. build-appimage.sh now always replaces the Breeze icons shipped with the AppImage with the appropriate head icon.

Won't fix for vsd3x

Meanwhile all executables are signed.

According to the ML @gniibe tried to replicate the problem without success.

Investigating GNU ld, I learned that there is no easy way (~= no way) to suppress the warnings (other than 2>/dev/null). It was implemented by the special section named gnu.warning.SYM where SYM is a symbol. I think that this is not-so-good for glibc to notify its users about possible static link problem, by gnu.warning.SYM.

I guess the test fails because one cannot create a key with an expiration date before the current date. And the test tries to create a key which expires on 2038-01-01 which will fail if the test is run on 2038-01-01 or later. The easiest fix would be to disable the test cases if the current date is past 2038-01-01.

Okay, then I set the ticket to Testing.

Unfortunately, this was run on x86_64 and also other 64 bit archs.

Is that on a 32 bit machine or 64? The latter would be a problem for 32 bit with 32 bit time-t I'd say: we won't fix it.

At least for an expired data signature I would suggest to have an info button to further expliah this. Maybe to a FAQ or KB article. The case is too rare that we should not discuss endlessly the pros and cons of expiring signatures. I hope that Kleo does not provide an option to crerate such a signature.