Microsoft

10 Sysinternals tools you shouldn't be without

#4 PsLoggedOn

PsLoggedOn uses a registry scan to look through the HKEY_USERS key to see which profiles are loaded. Looking at the keys with a user ID SID, PsLoggedOn looks up the username of the SID and displays it. This shows you who is logged on in any session to a PC. When querying remote systems, your userid will be found as a connected user session as well. The remote and local users are returned separately to help distinguish logon types,as you can see here.

About

Derek Schauland has been tinkering with Windows systems since 1997. He has supported Windows NT 4, worked phone support for an ISP, and is currently the IT Manager for a manufacturing company in Wisconsin.