[Samba] Samba error - Error: 0x80090345

[Ken Bass]

Hi all, I am really confused on what to try next. I have been running 
Samba for quite a long time.  I recently updated my PDC and BDC to 
Centos 7 which runs Samba 4.1.1. That appeared to be working fine for 
several months. I'm still using NT style domain controllers setup with a 
common ldap database. Everything seemed to be working until I installed 
a brand new computer last week. After making the two required registry 
edits, my new computer joined the domain.

After a fresh install of Win 8.1 one of my .NET applications stopped 
working (one that uses the .NET Crypto API) - so far I traced it to the 
following:
When I try to run 'Credential Manager', it gives the following error:
Error code: 0x80090345
Error Message: The requested operation cannot be completed. The computer 
must be trusted for delegation and the current user account must be 
configured to allow delegation.

I had no idea what this means. I didn't think delegation applies for NT 
style domains. My old computer is still working and can bring up the 
credential manager. I also have a virtual machine joined to the domain 
which can bring up the credential manager. If I log into a local admin 
user on this new computer, the credential manager runs.

My ldap entry for the machine shows
sambaAcctFlags: [W          ]

The domain user I am logging in with is a member of the Domain Admins 
group. This user and machine can still connect to my various share 
drives. It just seems to be something with this credential manager thing 
on the new machine.

Anyone have some ideas/suggestions to help troubleshoot this?