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I have deleted stale/obsolete PCs in AD, but the are still showing up in the collections in SCCM 2012. In &quot;Discovery methods&quot;, I have set the polling schedule to 5 minutes and in &quot;Options&quot;, the discovery option to the default 90 days logged on to domain, so at this point I am baffled as to what else is missing!
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I have deleted stale/obsolete PCs in AD, but the are still showing up in the collections in SCCM 2012. In "Discovery methods", I have set the polling schedule to 5 minutes and in "Options", the discovery option to the default 90 days logged on to domain, so at this point I am baffled as to what else is missing!

SCCM 2012 Endpoint Information Update

The Microsoft Legacy Operating System topic includes legacy versions of Microsoft operating systems prior to Windows 2000: All versions of MS-DOS and other versions developed for specific manufacturers and Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions, and Windows Mobile.