ZwOpenProcessTokenEx throwing error STATUS_NO_SUCH_LOGON_SESSION on vista

NTDEV
1

Hi

i am trying to query the Linked Token assosiated to a logged on user using the following code on a vista machine
TOKEN_LINKED_TOKEN hTokenHandle ;
NtTokenStatus =ZwOpenProcessTokenEx(NtCurrentProcess(),TOKEN_ALL_ACCESS,NULL,&TokenHandle);
NtLinkedTokenStatus = ZwQueryInformationToken(TokenHandle,TokenLinkedToken,&hTokenHandle,sizeof(TOKEN_LINKED_TOKEN),&dw);

but it is giving me error STATUS_NO_SUCH_LOGON_SESSION

it would be great if some body could help me in this regard.

2

In what context are you making the call? The context of the app or the system process?

-----Original Message-----
From: xxxxx@lists.osr.com [mailto:xxxxx@lists.osr.com] On Behalf Of xxxxx@gmail.com
Sent: Wednesday, April 16, 2008 2:34 AM
To: Windows System Software Devs Interest List
Subject: [ntdev] ZwOpenProcessTokenEx throwing error STATUS_NO_SUCH_LOGON_SESSION on vista

Hi

i am trying to query the Linked Token assosiated to a logged on user using the following code on a vista machine
TOKEN_LINKED_TOKEN hTokenHandle ;
NtTokenStatus =ZwOpenProcessTokenEx(NtCurrentProcess(),TOKEN_ALL_ACCESS,NULL,&TokenHandle);
NtLinkedTokenStatus = ZwQueryInformationToken(TokenHandle,TokenLinkedToken,&hTokenHandle,sizeof(TOKEN_LINKED_TOKEN),&dw);

but it is giving me error STATUS_NO_SUCH_LOGON_SESSION

it would be great if some body could help me in this regard.

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