we have a user who sees the following error code whenever trying to
change his password thru client32 or password self service: 0xfffffa78
(Client32) / -1416 (Password Self Service). Both codes resolve to NICI
E DATA INVALID. It's reproducible on different machines, where other
accounts work just fine, so it should be a problem with the account,
not any client issue. Btw. the password can be changed successfully by
an administrator...

Any idea what might be the cause and/or how to fix this?

Thanks, Lothar