In my feable desperation to resolve my issue with no response that works yet for me, I tried: net idmap dump > /tmp/dumpfile.txt, which dumped the my sid to uid mappings. I then edited the dumpfile.txt to change S-1-5-21-54348060-1989963526-242692186-28788 to map instead from 100000 to 785755, which is the uid of the unix user I want it to map to (note that username map = option appears to just map the name, not the uid, so that suggestion does not help me with nfs mounting a samba ad home directory to another server. Anyway, after this I did a restore, but I get the following error that I am not sure why it is giving it to me: [root@hq1al033][/] > net idmap restore < /tmp/dumpfile.txt Could not set mapping of UID 785755 to sid S-1-5-21-54348060-1989963526-242692186-28788 USER HWM: 7857551 GROUP HWM: 145448 If I search in the dumpfile.txt, I do not see 7857551 (why the 1 added?), so I cannot remove/change this. Of course, ideally, a solution from you samba wizards would be greatly appreciated. Thanks, David David Shapiro Distributed Systems Unix Team Lead office: 919-765-2011 cellphone: 730-0538