How to get a list of Windows sessions?

Question

I am trying to find a way to get a list of Windows sessions? I need the same information as the one displayed in the Task Manager on the User tab. I need to know if the user

Answer 1

I believe you'll need to use P/Invoke to retrieve this information.

The relevant APIs are documented in this MSDN page.

Answer 2

As a starting point you can get a list of users logged on by running the command

qwinsta

From the command prompt.

This will give output like

C:\WINDOWS\system32>qwinsta
SESSIONNAME       USERNAME                 ID  STATE   TYPE        DEVICE
>console           me                       0  Active  wdcon
rdp-tcp                                 65536  Listen  rdpwd

and will list any remote sessions.

Answer 3

Use LsaEnumerateLogonSessions via P/Invoke. You'll also need LsaFreeReturnBuffer to cleanup after enumerating.

Answer 4

You do not need to use Pinvoke. WMI does it, and well: "select Name, SessionId from Win32_Process" in the root\cimv2 namespace. And, it can be called from a remote machine. Simpler. Add in a where clause in the select to fine tune what you get back.

Answer 5

Another way is to use the Logonsessions utility from Sysinternals:

http://technet.microsoft.com/en-us/sysinternals/bb896769.aspx