Windows forgets to add GSS_C_MUTUAL_FLAG in some situations, when using GSS_C_DCE_STYLE for DCERPC based kerberos authentication.
This bug was referenced in samba master: ce10b28566eb7b3e26a1e404b278d3d761ac183e
Created attachment 18485 [details] Patch for v4-21-test
Created attachment 18486 [details] Patch for v4-20-test
Reassigning to jule for inclusion in 4.20 and 4.21.
Pushed to autobuild-v4-{21,20}-test.
This bug was referenced in samba v4-20-test: 81f92c8a62f49de727308ed6d334f6a247ca5143
This bug was referenced in samba v4-21-test: 00e1c97fee9cc197c34967d9099fec03f75658e0
Closing out bug report. Thanks!
This bug was referenced in samba v4-20-stable (Release samba-4.20.6): 81f92c8a62f49de727308ed6d334f6a247ca5143
This bug was referenced in samba v4-21-stable (Release samba-4.21.2): 00e1c97fee9cc197c34967d9099fec03f75658e0