samba - Aug 2002 - Error connecting to IPC$

What is this message?

[2002/08/21 01:56:36, 0] 
rpc_client/cli_spoolss_notify.c:spoolss_connect_to_client(109)
  connect_to_client: machine NT2000 rejected the tconX on the IPC$ share. 
Error was : NT_STATUS_ACCESS_DENIED.

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