Users Not Found in People Pickers
Ah yes, the people picker again. I recently inherited an environment where the previous administrator was kind enough to not document anything, especially the items he/she had been playing with in development.
When trying to designate a user as a Primary Site Collection Administrator in Central Administration, I was unable to query for subsets of domain users on a single web application. After checking all of the usual suspects (Peoplepicker-searchadforests I’m looking at you) with no success, it was off to the not-so-usual suspects.
It turns out the previous admin was kind enough to set the Peoplepicker-searchadcustomfilter property on the main portal site collection. After setting the property to null
stsadm -o setproperty -pn peoplepicker-searchadcustomfilter -pv "" -url [URL]
all was once again right with the world.
Now where did I leave my sledgehammer?