I did some debugging with smbclient...... smbclient -d 5 -L MYCLIENT the only difference I can see is locatet in the first Session repuest is anybody out there familiar with these protocols? Uli --snip from client working -- Sent session request size=0 <---------------------------- CLIENTS THAT CAN BE ACCESSED smb_com=0x0 smb_rcls=0 smb_reh=0 smb_err=0 smb_flg=0 smb_flg2=0 smb_tid=0 smb_pid=0 smb_uid=0 smb_mid=0 smt_wct=0 smb_bcc=0 session request ok --snip-- --snip from client not working -- Sent session request size=1 <---------------------------- CLIENT THAT FAILS smb_com=0x0 smb_rcls=0 smb_reh=0 smb_err=0 smb_flg=0 smb_flg2=0 smb_tid=0 smb_pid=0 smb_uid=0 smb_mid=0 smt_wct=0 smb_bcc=0 session request to P4-3-SERVER failed (Not listening on called name) --snip--