Retrieving the COM class factory for component with CLSID {GUID} failed due to the following error: 80070005.

If you add a reference to Microsoft Excel and then try to use it within your ASP.NET application you may receive the following error:

Retrieving the COM class factory for component with CLSID {00024500-0000-0000-C000-000000000046} failed due to the following error: 80070005.

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MOSS 2007

Installation Steps for Mircosoft Office SharePoint Server 2007 on a stand-alone computer

If you are new to SharePoint 2007, you can visit the follwoing link.

It gives steps to how to install MOSS 2007.

Click here to visit the website.

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