title: Retrieving the COM class factory for component with CLSID Error: 8000401a
body: <p>from last so many times I am getting the below error.As I am using the Microsoft Word dlls to create word files which further attached to the mail.</p>
  
  <pre><code>Server Error in '/' Application.
  Retrieving the COM class factory for component with CLSID {000209FF-0000-0000-C000-000000000046} failed due to the following error: 8000401a.
  Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
  
  Exception Details: System.Runtime.InteropServices.COMException: Retrieving the COM class factory for component with CLSID {000209FF-0000-0000-C000-000000000046} failed due to the following error: 8000401a.
  
  Source Error:
  
  An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
  
  Stack Trace:
  
  [COMException (0x8000401a): Retrieving the COM class factory for component with CLSID {000209FF-0000-0000-C000-000000000046} failed due to the following error: 8000401a.]
     iPortal.user.sendRAMail.GetData(Object fileName) in XXX:512
     iPortal.user.sendRAMail.btnSend_Click(Object sender, EventArgs e) in XXX:1300
     System.Web.UI.WebControls.Button.OnClick(EventArgs e) +107
     System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +110
     System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
     System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
     System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
     System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3436
  
  
  Version Information: Microsoft .NET Framework Version:2.0.50727.4216; ASP.NET Version:2.0.50727.4223 
  </code></pre>
  
  <p>can anybody please suggest me any solution.As I am also got some solutions that say me to change the access permission for the Word dlls using the <code>DCOMCNFG</code> but still getting the same error.but on some time it works properly...so I think the code is not an issue.
  And also <code>how I will find which account is using my current application.</code>(ex.Network Service, Administrator etc)</p>