But this is with the default keyserver keys.ubuntu.com it shows the fingerprint if I do a search --with-colons with 2.3 and the same keyserver (addressed via IP) on the same machine returns results on Windows and says No Fingerprints in the app image. This is what I found so strange here.

Hier scheint es sich um ein individuelles Problem zu handeln. Ich bin irritiert das die Fehlermeldungen von "gpgsm" also unserem S/MIME tool. Tritt der Fehler auch so auf wenn in den Einstellungen von GpgOL der S/MIME Support deaktiviert ist?

I agree, we should look for additional names when verifying checksums.

I can reproduce the problem. Under Windows it works, with my development setup with GnuPG 2.3 it works, but in the appimage I get the error that all keys were skipped.

The problem is that we keep the original, encrypted, signed structure of the mail as a hidden attachment. When we then add the attachments we extracted from the original mail as "real" attachments in the Outlook data structures we basically double in size and hit an error in Outlook. It does not always have to be double, e.g. if the attachment was compressed in the encrypted data it can be much larger then the original mail. So this happens mostly with data that is not easy to compress.

Thanks for the log and the analysis so far. In the log it is visible that the problem is that gpgol cannot create a temporary file to store the mails contents. Due to this it fails later as it has no data to encrypt. The storage as a temporary file was added in 3.1.16 to allow more embedded outlook objects since we now ask Outlook to first serialize the file. I wonder why this only occurs to very few people. Obviously it works for most people, including me.

Yes I agree to go for a.

Thanks for taking this up.

Ingo: I have now assigned this to you. If you can explain why my fix is required in a way that upstream would accept the change we should try to get this into KConfigWidgets proper. But I do not think that I can convincingly explain why it is required or what happens here.

After some debugging and reading the code I did not find any way that the KSharedConfigPtr could be accessed when it was NULL. It is never saved in a member variable. The only place it was saved was in the static thread_local variable of defaultConfig in kcolorschemehelpers_p.h. Since this was irritating because I understood QExplicitlySharedDataPointer to already handle thread_local ness

So after updating to latest kf5 this still happens. The windows event log tells me that the crash occurs from libkf5configwidgets.dll
Does not seem to happen on Linux, i have run it with valgrind to and only found other crashes on linux shutdown when closing the window.

Sorry, yes I meant the Certificate Dump not the Details.

We have even released 4.0.2 now.

JW-D with Gpg4win-4 we have support for multiple readers and also a dropdown menu for selecting reader ports. This should resolve this issue.

When we want to add more smartcards we should open new issues. This one is resolved.

I am closing this as the group support for gpgol is now in T5967

Still needs testing as this is a default off feature.

This needs to be tested with group configuration even for non mixed mode. There is an important wish to have the kleopatra group configuration be used in the keyresolver from outlook.

This can be bypassed by entering the date manually, was reported by a customer and I have just confirmed this.