Could not load file or assembly 'Microsoft.Office.Interop.Excel, Version=12.0.0.0, Culture=neutra...

I have a problem while I put my site on server... I have a code for upload a excel file data to sql database.. so I put this assembley in my web config file

<add assembly="Microsoft.Office.Interop.Excel, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71E9BCE111E9429C"/>

After publishing my site working on local IIS.. After puting it on server it gives follwoing error

Server Error in '/ems' Application.

Configuration Error

Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. 

Parser Error Message: Could not load file or assembly 'Microsoft.Office.Interop.Excel, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

Source Error: 

Line 46: <add assembly="System.Data.DataSetExtensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/> Line 47: <add assembly="System.Xml.Linq, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/> Line 48: <add assembly="Microsoft.Office.Interop.Excel, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71E9BCE111E9429C"/> Line 49: </assemblies> Line 50: </compilation>

Source File: C:\domains\poojahostingbiz\ankit.poojahosting.biz\wwwroot\ems\web.config     Line: 48  

Assembly Load Trace:  The following information can be helpful to determine why the assembly 'Microsoft.Office.Interop.Excel, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c' could not be loaded.

WRN: Assembly binding logging is turned OFF. To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1. Note: There is some performance penalty associated with assembly bind failure logging. To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].

上述問題的解決方法有兩種: 第一種:

1)、如果系統未安裝.Net Framework，請先安裝，如果已安裝了的話就可直接進行第二步。

2)、在“添加或删除程式”中對Office進行“更改”安裝操作，将漏裝部分重新安裝上去即可。具體操作如下面的圖檔：

如下圖：添加或删除Office功能

如下圖：對應用程式進行進階自定義

如下圖：在“.Net 可程式設計性支援”選項的下拉菜單中選擇“從本機運作”或“從本機運作全部程式”。

經過以上步驟的安裝後，Office 2003 PIA就會被安裝到GAC裡去了，可以從以下目錄看到：“C:\Windows\assembly”，進而如題所述的問題也就解決了。

  第二種: 下載下傳更新檔包(2007 Microsoft Office System Update: Redistributable Primary Interop Assemblies), 位址是: http://www.microsoft.com/en-us/download/details.aspx?id=18346 下載下傳後安裝即可