COM component Error while creating ppt from asp.net in windows server 2003

[phpachu]

Hi,

Iam struggling with a COM component Error---"Error HRESULT E_FAIL has been returned from a call to a COM component. " while generating ppt from asp.net application. Its isworking fine in XP machine and showing error when deployed in windows server 2003.And use the com component "Microsoft PowerPoint Object 11"
I have run DCOMCNFG and give NETWORKSERVICE account. I think access permissions are all given correctly.But still showing error in server. Can any plz help me.Iam struggling with this for last fews days.

Thanks in advance....

[kenobewan]

Seems the component may not be installed on the other machine?

Hi,

Iam struggling with a COM component Error---"Error HRESULT E_FAIL has been returned from a call to a COM component. " while generating ppt from asp.net application. Its isworking fine in XP machine and showing error when deployed in windows server 2003.And use the com component "Microsoft PowerPoint Object 11"
I have run DCOMCNFG and give NETWORKSERVICE account. I think access permissions are all given correctly.But still showing error in server. Can any plz help me.Iam struggling with this for last fews days.

Thanks in advance....

[phpachu]

Seems the component may not be installed on the other machine?

Thanks for the quick reply. Anyway Components are already there.I haved succesfully able to create an excel document using COM component in the same way.But failed in Powerpoint.From the error Stack Trace it is found error is on the Open() function.
The Error detail is as shown below.

Exception Details: System.Runtime.InteropServices.COMException: Error HRESULT E_FAIL has been returned from a call to a COM component.

What shall I do?


Thanks

[kenobewan]

Suggest showing the relevant code and highlight line that causes error.

Thanks for the quick reply. Anyway Components are already there.I haved succesfully able to create an excel document using COM component in the same way.But failed in Powerpoint.From the error Stack Trace it is found error is on the Open() function.
The Error detail is as shown below.

Exception Details: System.Runtime.InteropServices.COMException: Error HRESULT E_FAIL has been returned from a call to a COM component.

What shall I do?


Thanks

[Frinavale]

...
Exception Details: System.Runtime.InteropServices.COMException: Error HRESULT E_FAIL has been returned from a call to a COM component.

This type of error usually occurs when a COM component is not properly installed or the necessary resources it requires to use are missing. Make sure that the COM component is properly installed and that all of the resources it requires are also installed.

-Frinny

[gnagno]

1. Launch DCOM Config (Administration Tools / Component Services)
2. Choose Microsoft Office Powerpoint Slide Properties ({64818D10-4F9B-11CF-86EA-00AA00B929E8}).
3. Right Click and choose Properties.
4. Select Identity Tab.
5. Set to "The Interactive user" option.

Hope it helps ;-)

[ohmygod]

I am meeting with similar problem. See my another thread.
http://bytes.com/topic/net/answers/9...nt#post3638144

[syedmuneem]

Hi,
My suggestion would be to use impersonation.
This would naturally help you exporting to ppt in windows server 2003

Here's is impersonation code
use namespaces

using System.Runtime.InteropServices;
using System.Security.Principal;

Code for impersonation

public static void ImpersonateUser(string username, string password)
        {
            ImpersonateUser(".", username, password);
        }
 
        /// <summary>
        /// This method is used to impersonate a user with domain name
        /// </summary>
        public static void ImpersonateUser(string domain, string username, string password)
        {
            StopImpersonating();
 
            IntPtr userToken;
            var returnValue = ImpersonationImports.LogonUser(username, domain, password,
                                                      ImpersonationImports.LOGON32_LOGON_INTERACTIVE,
                                                      ImpersonationImports.LOGON32_PROVIDER_DEFAULT,
                                                      out userToken);
            context = WindowsIdentity.Impersonate(userToken);
        }
 
        /// <summary>
        /// This method is used to stop impersonating 
        /// </summary>
        public static void StopImpersonating()
        {
            if (context != null)
            {
                context.Undo();
                context = null;
            }
        }
        public static class ImpersonationImports
        {
            public const int LOGON32_LOGON_INTERACTIVE = 2;
            public const int LOGON32_LOGON_NETWORK = 3;
            public const int LOGON32_LOGON_BATCH = 4;
            public const int LOGON32_LOGON_SERVICE = 5;
            public const int LOGON32_LOGON_UNLOCK = 7;
            public const int LOGON32_LOGON_NETWORK_CLEARTEXT = 8;
            public const int LOGON32_LOGON_NEW_CREDENTIALS = 9;
            public const int LOGON32_PROVIDER_DEFAULT = 0;
 
            [DllImport("advapi32.dll", SetLastError = true)]
            public static extern int LogonUser(
                string lpszUsername,
                string lpszDomain,
                string lpszPassword,
                int dwLogonType,
                int dwLogonProvider,
                out IntPtr phToken
                );
            [DllImport("advapi32.dll", SetLastError = true)]
            public static extern int ImpersonateLoggedOnUser(
                IntPtr hToken
            );
 
            [DllImport("advapi32.dll", SetLastError = true)]
            public static extern int RevertToSelf();
 
            [DllImport("kernel32.dll", SetLastError = true)]
            public static extern int CloseHandle(IntPtr hObject);
 
 
        }
 
 In your button click event
 protected void btnPPT_Click(object sender, EventArgs e)
        {
             ImpersonateUser("<username of windows server 2003>", "<password of windows server 2003>");
//export code goes here
StopImpersonating();
}