I did a fresh install of truenas 12.0 U1 (because that's what I had previously downloaded) immediately upgraded to U2 and cannot join active directory. The only other setting I set was the Timezone. When doing so, I receive the following error:
[EFAULT] activedirectory_update: Failed to validate domain configuration: [EFAULT] Netlogon connection to [vpuprdc01.bapm.com] failed with error: An invalid parameter was passed to a service or function.
Debug attached to this ticket.