source3/libads/kerberos.c sets wrong failure for negative connection cache. Need bug for 4.23.
This bug was referenced in samba master: 9e1bcf84d8a8386fb00aedf88e71b28504e449b4
Created attachment 18834 [details] patch for 4.24
patch LGTM
Andreas, 4.23 is not affected (you mentioned it in comment 0)?
I meant 4.24. It is only there. Thanks for asking Björn.
This bug was referenced in samba v4-24-test: 0a6726fb83466f750a66aa41b2c304e592522864