Invalid window handle error

Guest · Posted: Wed Mar 05, 2003 11:06 am Post subject:

Windows XP Pro SP1 using RDP (remote desktop/terminal services)

Hostmon running as service, logon locally, open Hostmon, choose edit - all works; logon via RDP, open Hostmon, edit anything or choose Options opens small unuseable window/edit box and hangs Hostmon forcing restart of service. This also happens if starting service while logged in via RDP, the logging into the console.

Error [Invalid window handle] below is found in the WinXP Application event log. Easy fix?

Event Type: Error
Event Source: hostmon.exe
Event Category: None
Event ID: 0
Date: 3/5/2003
Time: 8:59:19 AM
User: N/A
Computer: <removed>
Description:
The description for Event ID ( 0 ) in Source ( hostmon.exe ) cannot be found. The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer. You may be able to use the /AUXSOURCE= flag to retrieve this description; see Help and Support for details. The following information is part of the event: Win32 Error. Code: 1400.
Invalid window handle.

Thanks.

KS-Soft · Joined: 03 Apr 2002 Posts: 12255 Location: USA

I think when you use RDP, it provides different system handles for each user session (like NT 4.0 changes handles every time user login). Unfortunatelly to correct this problem we have to redesign compliler's library. Its not easy at all

In HostMonitor version 4 will be implemented Remote Control Center to allow configure HostMonitor using TCP/IP

Regards
Alex

Marcus · Joined: 18 Nov 2002 Posts: 367

I think when you use RDP, it provides different system handles for each user session (like NT 4.0 changes handles every time user login).

It sounds like the same problem with terminal service, with the exception that you can login directly to the console. Solution could be: Stop the service before starting the application. When finished, stop the application and start the service.

To avoid problems you could turn off the system tray icon......

BHarvey · Joined: 27 Oct 2002 Posts: 33

If you turn off the tray, how do you open the existing service for monitoring and changes?

Management via TCP and a Web interface will be excellent.

Thanks,

Brad

Marcus · Joined: 18 Nov 2002 Posts: 367

You have to stop the service and then start the application itself.

To stop the service: net stop "Advanced Host Monitor"

After you are finished, you should start the service again:
net start "Advanced Host Monitor"