Problem using WTSOpenServer on Win2003Server DC

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

Christopher Attard - 07 Jan 2005 14:09 GMT

Hi,
I'm using WTSOpenServer (P/Invoke in a C# application) to open a
handle to a specified terminal server which is Win2003 Server Domain
Controller.

The function is returning NULL (or 0). I'm able to connect
successfully to the terminal server when using the remote desktop program
from a WinXP client machine.

Any ideas or suggestions pls?

Regards,
Chris Attard

Reply to this Message

Mattias Sj?gren - 07 Jan 2005 14:46 GMT

> Any ideas or suggestions pls?

Ensure that you have SetLastError=true in your DllImport attribute,
then call Marshal.GetLastWin32Error() after the call to
WTSOpenServer() to get an idea about why its failing.

Mattias

Signature

Mattias Sjögren [MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.

Reply to this Message

Christopher Attard - 07 Jan 2005 14:55 GMT

Yes, I'm already dong it....The error returned is: 5

>> Any ideas or suggestions pls?
>
[quoted text clipped - 3 lines]
>
> Mattias

Reply to this Message

Willy Denoyette [MVP] - 07 Jan 2005 17:30 GMT

Which means "access denied".
You have to impersonate using a privileged account's credentials (like a
domain admins, or enterprise admins account).

Willy.

> Yes, I'm already dong it....The error returned is: 5
>
[quoted text clipped - 5 lines]
>>
>> Mattias

Reply to this Message

Christopher Attard - 08 Jan 2005 09:47 GMT

I'm using the Administrator account which is a member of the Domain Admins
and still it's returning an error of 5. What seems awkward is that when I'm
using the same account to connect to the same server through mstsc.exe, its
creating a successful terminal session.

Chris

> Which means "access denied".
> You have to impersonate using a privileged account's credentials (like a
[quoted text clipped - 11 lines]
>>>
>>> Mattias

Reply to this Message

Willy Denoyette [MVP] - 08 Jan 2005 10:28 GMT

Should work, try using a DC administrator account.
- check the eventlog (turn on auditing).
- check your accounts privileges.

Willy.

> I'm using the Administrator account which is a member of the Domain Admins
> and still it's returning an error of 5. What seems awkward is that when
[quoted text clipped - 18 lines]
>>>>
>>>> Mattias

Reply to this Message

Christopher Attard - 10 Jan 2005 08:47 GMT

Thanks Willy...problem solved. Infact i was running the call in the security
context of a non-administrative account.

Chris

> Should work, try using a DC administrator account.
> - check the eventlog (turn on auditing).
[quoted text clipped - 24 lines]
>>>>>
>>>>> Mattias

Reply to this Message

Rate this thread:

Problem using WTSOpenServer on Win2003Server DC

Free Magazines