How To Use Microsoft.Office.Interop.Excel Without Installing Microsoft Office

Dec 09, 2010 12:14 PM

My server administrator does not allow me to install Microsoft Office in the server.

I have developed a website which converts XML files to Excel and it is using Microsoft.Office.Interop.Excel.

Is there any way I can run this application without installing Microsoft Office in the server?


C# - Microsoft Office Interop Excel 12.0 Not Working In IIS 7?

Feb 25 10 at 5:26

I am creating a pivot table excel sheet in my ASP .NET web application using Microsoft Office Interop Excel 12.0 components. It is creating the excel file correctly, when i run it from my Visual Studio 2008 in Debug/Release mode.

But when i deploy the solution in IIS 7, first i got some permission issues, which i resolved by giving permission in the DCOMCNFG file. Now i am getting the following error, when trying to open the Excel file:


These are the code which i used to open and close the excel application object


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Jan 27, 2010 05:21 AM

I wanto to create matrix report dynamically using Microsoft.Office.Interop.Excel.dll so that i can create pivot table and Report from this, how i can create these kind of repots where in user will drag and drop the details and it will create reports.

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C# - Why Not Running Microsoft.Office.Interop.Outlook

Sep 6 10 at 10:25

I wrote some code about sending mail, Task, Appoinment etc. For example you can add someone to your outlook contact list over page. Every thing is ok on my local machine. But if I publish my application to a server I can not add noone on my outlook.

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C# - Why Does Web Application Timeout Using Microsoft.Office.Interop.Word

Feb 21 at 5:35

I have been using using Microsoft.Office.Interop.Word in my webserver (yes, i know it is not recommended). When I ran it on my machine, it runs fine, but when running on the server I get a timeout on the following line:Documents.Open //when trying to open the file.Is there something I'm missing? Is there a better way to edit a Word document within web servers/websites? (I can't create a new one using string builder or outputting into file; I need to edit an existing one that sits on the server.)

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Installation :: How To Deploy Microsoft.Office.Interop.Word.dll On Win 2003 Server

Dec 18, 2008 02:42 PM

I am using micorosft word from my web application to create a word document, i do not need to open word on the server, just to create the document in the backend and save it, in my application in the local comuputer i added a refrence to the following dll:


everthing is working fine, but on the server, there is no word installed, nor the mentined dll, i am not sure how i deploy the dll on the server

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VS 2008 Could Not Load File Or Assembly 'Microsoft.Office.Interop.Word / How To Fix This Error

Dec 10th, 2010, 09:59 PM

I am having an issue that I do not quite understand. I had an ASP project that I built using


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

while I still had Office 2007 still on my development PC. I recently upgraded to Office 2010 and even though the web.config file still remains with the above assembly reference, when I publish it and run it now i keep getting the following error ...


Could not load file or assembly 'Microsoft.Office.Interop.Word, Version=, Culture=neutral, PublicKeyToken=71e9bce111e9429c' or one of its dependencies. The system cannot find the file specified.

I also have installed the PIA for Version= on the server but I still get the same result.

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Unable To Import "Microsoft.Office.Interop.Word"

Aug 08, 2007 08:01 AM

I am developing an application in .aspx in which the entered data is to be written in a word file,if the file exists then the content will be appended else it will create a new doc file.

In order to do so,the steps and the code that i have followed is as follows

1)Added reference -- Microsoft Word 10.0 Object Library

2)In the Code behind page i have first imported the following

Imports System.Runtime.InteropServices,Imports Microsoft.Office,Imports Microsoft.Office.Core

But the problem arises when i am trying to import

Imports Microsoft.Office.Interop.Word (as i am only able to access uptill Microsoft.Office.Core)

3) I have then tried to accomplish the task Importing only "Microsoft.Office.Core" namespace

By writing the following sample

Dim oWordApp
As New Word.ApplicationClass(Error line)
Dim oWordDoc
As New Word.Document
Dim filename


[ASP.NET is not authorized to access the requested resource. Consider granting access rights to the resource to the ASP.NET request identity. ASP.NET has a base process identity (typically {MACHINE}ASPNET on IIS 5 or Network Service on IIS 6) that is used if the application is not impersonating. If the application is impersonating via <identity impersonate="true"/>, the identity will be the anonymous user (typically IUSR_MACHINENAME) or the authenticated request user.]

[To grant ASP.NET write access to a file, right-click the file in Explorer, choose "Properties" and select the Security tab. Click "Add" to add the appropriate user or group. Highlight the ASP.NET account, and check the boxes for the desired access.]

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Using Microsoft.Office.Interop.Word To Convert Uploaded Word Documents Into Previewable Html Files?

Feb 03, 2010 02:29 PM

I'm hoping this is an easy one...I'm using Microsoft.Office.Interop.Word to convert uploaded word documents into previewable html files. I haven't implemented it fully, but I've played around with it enough that I think I have a plan that will work... My question revolves around


I'm not in love with the idea of opening word and closing it everytime there's an upload (which I hope is a lot of the time) I'd like to make this a shared object that loads at application start. I have 2 questions
that go along with this. 1. I imagine that winword could lock up and that would be a problem, right? 2. to save a document I use wordapp.ActiveDocument, this could have an issue as a shared object, right? I think I'm talking myself right out of this...

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Web Forms :: Microsoft Office Excel Cannot Open Or Save Any More Documents

Aug 05, 2009 06:54 AM

I am gettign an eror when on deployed the application in the server 2003.


moreover the instance of excel is not gettign closed, if i take taskmanager i am able to see more than one instance of Excel.

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DataSource Controls :: Read Excel With Out Install Microsoft Office 2007?

May 22, 2010 11:31 AM

On my local machine i read excel cell for it I used Microsoft.Office.Interop.Excel and there are microsoft office 2007 is installed on my system but when i host site at live server there are microsoft offie 2007 is not installed so that error comes that Microsoft.Office.Interop.Excel could not load.

For it i also try to install o2007pia.msi on server but it gives error install microsoft office 2007 before install this product.

So that iwants to read excel cell with out install MS Office.

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Creating Excel File Using Office.Interop?

Nov 10, 2010 09:59 AM

In my page, I am creating excel file using Office.Interop and saving. The application works correctly in my local. When I am deploying in Win 2003 server I am getting below Error. I don't have excel installed in server.

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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Error "DataTable Is An Ambiguous Reference Between System.Data.DataTable And Microsoft.Office.Interop.Word.DataTable"

Jan 20, 2011 05:46 AM

'DataTable' is an ambiguous reference between 'System.Data.DataTable' and 'Microsoft.Office.Interop.Word.DataTable'

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Mar 16 10

I want create my output in excel file. But in server i cannot install office, its too costly i am developing it with vishual studio2005 with vb. so anybody can give the solution for this.

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Jan 08, 2010 08:31 AM

I want to read write excel file in my application without installing the office on my server. Means my server don't have any excel (MS office) installation. Is it necessory to install the office on server to excute the program of read or write the excel file.

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Apr 21, 2008 12:09 PM

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Jun 18, 2009 10:13 AM

which event gets fired when clicking on Microsoft office outlook folders.I want to know which event works when we click on folders like mail,tasks etc.I'm using visual studio 2008.

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Oct 15, 2009 01:58 PM

We are rolling out our new corporate intranet built on MOSS - and we want to convert some of our existing .Net web applications to webparts and other apps integrated into the MOSS site. I've started to look at the information on the Microsoft Sharepoint Developer Center site (, and downloaded the sharepoint SDK and Visual Studio 2008 extehsions for windows Sharepoint Services. But the VS2008 extension won't install - I get a message saying I need WindowsSharepoint Sevices 3.0 installed first. Now, our environment is developers have XP Professional workstations (soon to be Windows 7), with VS 2008 installed. But we have dedicated servers running our development and production IIS and Sharepoint software.Can someone point me to some resources on how to set up a professional level development environment for developing with Sharepoint? What is the acknowledged "best practice" for supporting several developers? I want to have this integrated into our current Subversion source conde management enviroment as welleven if it is along the lines of "the sharepoint gurus hang out on the such-and-such forum".

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Web Forms :: How To Open Microsoft Office Word File From A Button Click In Aspx Page Using C#

May 11, 2010 08:45 AM

i have an aspx page with one button on it the name of the page is Default.aspx

i have a physical microsoft office word file in the c drive

what i want to do is that when i press a button i open a microsoft office word located on the c drive then i add some text to it using c# code

then i want to open the file (that i edited and located in memory) in mircosoft office word to see the text that i have added

everything works fine but when i press the button i get a prompt that says do you want to open the file or save it .


so how can i directly open the file (located in memory) in microsoft office word without this prompt

also if i choose open from the prompt the file opens in the read only mode and the title of the file in the microsoft word become the name of the aspx page which is Default.aspx

so what is going wrong here


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Difference Between Microsoft Visual Studio 2005 And Microsoft Visual Studio 2005 Tools For Office

Jun 12, 2009 10:48 AM

What is the difference between Microsoft Visual Studio 2005 and Microsoft Visual Studio 2005 Tools for Office Runtime? I have a system where Microsoft Visual Studio 2005 Tools for Office Runtime is installed and i want to debug the pages. Do I have to install Microsoft Visual Studio 2005 (Professional Edition) or can I work on Microsoft Visual Studio 2005 Tools for Office Runtime on that

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Running Into A .NET COMException With MS Office Interop?

Feb 16 10 at 16:31

I am trying to work with the Windows clipboard and Office Interop in an ASP.NET web application.Everything works well on my local machine running XP (i have created a Windows application first which ran perfectly well on local machine). Then I have executed it on a server running Windows Server 2003 and it worked there as well.Then I made a ASP.NET sample project and it worked on my local machine. However when this time I deployed it at the server, after banging my head with permissions, it started giving me this exception which i have no idea why it is doing this:

System.Runtime.InteropServices.COMException (0x80048240):
Shapes (unknown member): Invalid request. Clipboard is empty or
contains data which may not be pasted here.
at Microsoft.Office.Interop.PowerPoint.Shapes.Paste()

Is the problem with any sort of permissions again on clipboard? If yes, how can I grant appropriate permissions?

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Access :: Microsoft Office Access Database Engine Cannot Open Or Write To The File (.xls) Error?

Dec 03, 2009 05:38 PM

Everything is working fine on client side. Now i just add my web application to IIS and after that when i am trying to browse the file

and getting the data from execl sheets. this error comes:

The Microsoft Office Access database engine cannot open or write to the file (.xls).

It is already opened exclusively by another user, or you need permission to view and write its data.but where should i have to give the permissions and all stuff. i tried everything, even i give all permission to IUSER, system, admin etc.

Here is what i an trying to do.User have to select the excel file from their computer by web application. when they click the button, all the data of that excel sheet shown up.

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Merge Word Documents (Office Interop & .NET) - Keep Formatting

Mar 25 10 at 1:48

I'm having some difficulty merging multiple word documents together using Microsoft Office Interop Assemblies (Office 2007) and ASP.NET 3.5. I'm able to merge the documents, but some of my formatting is missing (namely the fonts and images). My current merge code is shown below.

private void CombineDocuments() {
object wdPageBreak = 7;
object wdStory = 6;
object oMissing = System.Reflection.Missing.Value;
object oFalse = false;
object oTrue = true;
string fileDirectory = @"C:documents";
Microsoft.Office.Interop.Word.Application WordApp = new Microsoft.Office.Interop.Word.Application();
Microsoft.Office.Interop.Word.Document wDoc = WordApp.Documents.Add(ref oMissing, ref oMissing, ref oMissing, ref oMissing);
string[] wordFiles = Directory.GetFiles(fileDirectory, "*.doc");
for (int i = 0; i < wordFiles.Length; i++) {
string file = wordFiles[i];
wDoc.Application.Selection.Range.InsertFile(file, ref oMissing, ref oMissing, ref oMissing, ref oFalse);
wDoc.Application.Selection.Range.InsertBreak(ref wdPageBreak);
wDoc.Application.Selection.EndKey(ref wdStory, ref oMissing);
string combineDocName = Path.Combine(fileDirectory, "Merged Document.doc");
if (File.Exists(combineDocName))
object combineDocNameObj = combineDocName;
wDoc.SaveAs(ref combineDocNameObj, ref m_WordDocumentType, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing);

I don't care necessarily how this is accomplished. It could output via PDF if it had to. I just want the formatting to carry over.

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Feb 20, 2009 10:23 AM

I have a DataSet with two tables and want to write this DataSet values into an excel work bookDataSet Table 1 values should come in excel sheet 1, DataSet Table 2 values should come in same work book sheet 2. This task should be accomplished without using any office components.Application should be able to run in a machine where Microsoft office is not installed

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"Could not load file or assembly 'Microsoft.ReportViewer.ProcessingObjectModel, Version=, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified. I'm presuming this means I need to install the Microsoft Report Viewer Redistributable 2008 at[URL] displaylang=en on the server? Only thing is it just mentions Vista and XP in the supported operating systems- can this be installed on Server 2003?

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Mar 24, 2010 04:02 PM

The code Export data from GridView to Excel is working fine but in our office network all machines have MS Office2007 so when user click to export data and save the file it is always saving in the old format and when user wants to open that excel file then a popup asks the compatibility of version to open yes or no. So to open the file user everytime click Yes.

I just want to export data from GridView to Excel in MS Office 2007 version, so that when user click to open then it directly open the file without asking any question.

Following is the code which I used in my projects's web pages:

Therefore I cannot try any other code. I just want minor ammendment's in this code to accomplish this task.


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Jan 19, 2009 12:20 PM

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string connectionString = "Driver={Microsoft Excel Driver (*.xls)};DriverId=790;Dbq=c:\In.xls; FIRSTROWHASNAMES=0;READONLY=FALSE;";
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connection.ConnectionString = connectionString;
using (DbCommand command = connection.CreateCommand())
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Dec 16, 2008 11:56 AM

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Sep 15th, 2009, 02:48 AM

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Feb 15, 2011 09:16 PM

I am developing a simple web app on Visual Studio 2010 on Vista, using Local IIS. When I ran I got this error message:

Retrieving the COM class factory for component with CLSID {00024500-0000-0000-C000-000000000046} failed due to the following error: 80070005 Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)).

For this app, I did the following.

-- Add Reference of Microsoft Excel 12.0 Object Library from WebSite option on Visual Studio 2010.

-- Here is the code: (Error occured @ Dim xii2 As New Excel.application). The identical code and idential Add Reference were fine when developed under window .net asp

application, not web app.
Imports Microsoft.Office.Interop
Partial Class _Default
Inherits System.Web.UI.Page


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Dec 18, 2008 08:31 AM

I am uploading the Microsoft Excel file sheet to the server folder then get that file from the server upload to the datagrid .

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"Data Source= C:\Inetpub\wwwroot\deff\Uploadfiles\ppsx.xls;" +

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I mean where there is ppsx.xls file it should be a variable and dynamic. I have tried to put a variable passing the name of the file but is saying it can find the excel sheet on the file.

I have tried 2 ways of declaring variables but I am not getting it. How can I achieve this. The variables have used and not working are as follows,

String filenametoup = " ppsx.xls";
second is as follows;

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