Last week I had 10.000 computer with CLIENT=YES, but this week I have in SCCM Console only 9.800 computers with CLIENT=YES. In tasks I have "Delete Inative Client Discovery Data" task to 180 days. Why this is happening?

Hi,Do you have any Client health check installed? The 200 clients are they missing from the console or are they marked as obsolete/inactive?Kent Agerlund | http://scug.dk/members/Agerlund/default.aspx | The Danish community for System Center products

Do you have any Client health check installed? I dont know :(The 200 clients are they missing from the console or are they marked as obsolete/inactive?Obsolete

Are you able to ping the 200 machines which now show as obsolete? You may refer the script mentioned in the link (http://blogcastrepository.com/blogs/fulgavkar/archive/2008/01/18/ping-script-for-multiple-machines.aspx) to identify if these machines are online. If you find that a few machines are online and show as obsolete Check the SCCM Client log files for errors.

If they clients are marked as obsolete it might be because they have been reimaged.Kent Agerlund | http://scug.dk/members/Agerlund/default.aspx | The Danish community for System Center products

Run this query on your SQL server... it may shed some light for you: select sys1.netbios_name0 as 'Obsolete System', sys1.obsolete0, sys1.decommissioned0 , sys2.netbios_name0 as 'Good System', sys2.obsolete0, sys2.decommissioned0 from v_r_system sys1 left join v_r_system sys2 on sys1.netbios_name0 = sys2.netbios_name0 where (sys1.obsolete0 = 1 and sys2.obsolete0 = 0) or (sys1.decommissioned0 = 1 and sys2.decommissioned0 = 0) nick