Acrobat SDK C# Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)

Question

Hi,
Here I want to known one thing clearly, that is I was developed one application in C# with Acrobat SDK.
In my application I am using Acrobat AxAcroPDFLib.AxAcroPDF and  also some other acrobat class.
In my development system i am using Acrobat 7.0.
When my application installed in my client system I am faced different types of problem.
System 1
System Configuration
OS : XP
Acrobat 7.0
Result : Success
System 2
System Configuration
OS : XP
Acrobat 5.0
Acrobat 7.0
Result : Fail
Error : Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)
System 3
System Configuration
OS : XP
Acrobat 7.0
Adobe Reader 9
Result : Success
Note:
But I having problem when I am use my application while Adobe Reader 9 is open.
What is problem?
Error is related to ActiveX COM fail like
Error HRESULT E_FAIL has been returned from a call to a COM component.
Retrieving the COM class factory for component with CLSID {FF76CB60-2E68-2E68-101B-B02E-04021C009402} failed due to the following error: 80080005
System 4
System Configuration
OS : XP
Acrobat 7.0
Result : Success
Problem:
At the time of tool installation the system configuration will be as mention above, after by mistake they installed Adobe Reader 5.0. I faced the problem to use my application ActiveX COM failed
So I was un installed Adobe Reader 5, and tried but I got the following error,
     System.Runtime.InteropServices.COMException (0x80040154): Class not registered (Exception      from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))
at System.Windows.Forms.UnsafeNativeMethods.CoCreateInstance(Guid& clsid, Object punkOuter, Int32 context, Guid& iid)
at System.Windows.Forms.AxHost.CreateWithoutLicense(Guid clsid)
at System.Windows.Forms.AxHost.CreateWithLicense(String license, Guid clsid)
at System.Windows.Forms.AxHost.CreateInstanceCore(Guid clsid)
at System.Windows.Forms.AxHost.CreateInstance()
at System.Windows.Forms.AxHost.GetOcxCreate()
at System.Windows.Forms.AxHost.TransitionUpTo(Int32 state)
at System.Windows.Forms.AxHost.CreateHandle()
at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
at System.Windows.Forms.AxHost.EndInit()
at Greenleaf_MetaData.ArticleMetaData_Jnl.InitializeComponent()
at Greenleaf_MetaData.ArticleMetaData_Jnl..ctor()
at Greenleaf_MetaData.MainForm.btn_Process_Click(Object sender, EventArgs e)
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)   
So, I am advised my System Admin team to Re-Install the Acrobat 7.0, after the Re-Installation of Acrobat 7.0, all the problem get solved.
But I want to known what is problem?
And also what is the Adobe COM connection between Acrobat ActiveX and my Application(C#, VB, etc…).
So Please give clear information and guidance...
Thanks & Regard
Thirusanguraja Venkatesan

Answer 1

A simple google can get:
Common problems such as Windows Error Code 0x80040154 can be resolved with without too much difficulty. In this article we will go through solving the problem and how to prevent it in the future.
What happens
If you are registering an ATL server, you may see this error code. In the case of DLLs, regsvr32.exe will generate this error. In the case of EXEs, calling _Module::RegisterServer (CComModule::RegisterServer) in _tWinMain() will generate this error.
For detail: http://www.error.info/windows/registry-0x80040154.html
Cheers,
andy