Adding Devices To UCS Domain No Longer Works


I hope you are well. I’ve been having issues adding new computers to UCS. Adding MacOS devices show a “Node name wasn’t found” error and Windows devices show a “The user name or password is incorrect.”. In my attempts to diagnose the issue, I was reading and followed some of the steps in Samba 4 Troubleshooting article in the KB (Samba 4 Troubleshooting) and tried running this command:

samba-tool drs kcc -UAdministrator

This was the result:

dcerpc: bind_nak reason 0 - NT_STATUS_UNSUCCESSFUL
dcerpc: bind_nak reason 0 - NT_STATUS_UNSUCCESSFUL
Failed to bind to uuid e3514235-4b06-11d1-ab04-00c04fc2dcd2 for ncacn_ip_tcp:[49152,seal,,abstract_syntax=e3514235-4b06-11d1-ab04-00c04fc2dcd2/0x00000004,localaddress=] NT_STATUS_UNSUCCESSFUL
ERROR(<class ‘samba.drs_utils.drsException’>): DRS connection to failed - drsException: DRS connection to failed: (-1073741823, ‘{Operation Failed} The requested operation was unsuccessful.’)
File “/usr/lib/python2.7/dist-packages/samba/netcmd/”, line 44, in drsuapi_connect
(ctx.drsuapi, ctx.drsuapi_handle, ctx.bind_supported_extensions) = drs_utils.drsuapi_connect(ctx.server, ctx.lp, ctx.creds)
File “/usr/lib/python2.7/dist-packages/samba/”, line 56, in drsuapi_connect
raise drsException(“DRS connection to %s failed: %s” % (server, e))

Can anyone point me in the right direction to fix this?