In a previous post I have written about Using the people picker over a one-way trust. In this post I use STSADM commands as there are no other ways to configure this. A downside of the STSADM command is your domain password being visible on the command prompt in clear text for everybody to read, or to retrieve from the command line history. SharePoint 2010 introduces several cmdlets to replace the “old” STSADM commands. Microsoft has posted an overview of the STSADM to Windows PowerShell mapping. However the commands for configuring the people picker are not available.

When you have a SharePoint farm and you want to use accounts from another domain you need a partial (one-way) or a full (two-way) trust between those domain. A full trust is not always desirable and there your problem begins. After setting up the one-way trust you can authenticate with an account from the trusted domain, but the SharePoint People Picker doesn't show any accounts from this domain. It has been documented by others before, but as I ran into this recently I'll give my summary how I fixed this.