I am trying to find out why the object of Microsoft PowerPoint application doesn't want to open pptx file. This is what I have (C#):
using PowerPoint = Microsoft.Office.Interop.PowerPoint;
using MSBool = Microsoft.Office.Core.MsoTriState;
private void button2_Click(object sender, EventArgs e)
{
PowerPoint.Application oPowerPointApp = new PowerPoint.Application();
oPowerPointApp.Activate();
oPowerPointApp.Visible = MSBool.msoTrue;
oPowerPointApp.Presentations.Open("c:\\mypp\\pptx001.pptx");
}
I am getting this exception when Open method is been called:
**System.Runtime.InteropServices.COMException: 'Error HRESULT E_FAIL has been returned from a call to a COM component.'
**
I have Microsoft 365 MSO (Version 2211 Build 16.0.15831.20220) 64-bit
Windows 10 64 bit
MSExcel application works just fine.
I am wondering if somebody had this kind of issues and have a solution. Any help would be greatly appreciated.
I tried to:
Tweak values of DCOM for Microsoft PowerPoint previewer (Security and Identity tabs)
Reinstall PowerPoint (MS Office)
Call to Open method with all kinds of different combinations of arguments
Install Nuget package Microsoft.office.Interop.PowerPoint
System.Runtime.InteropServices.COMException: 'Error HRESULT E_FAIL has been returned from a call to a COM component.'
This is a widely spread error when Office applications are automated on the server or form any service applications. Here is what MS states for such scenarious:
Microsoft does not currently recommend, and does not support, Automation of Microsoft Office applications from any unattended, non-interactive client application or component (including ASP, ASP.NET, DCOM, and NT Services), because Office may exhibit unstable behavior and/or deadlock when Office is run in this environment.
If you are building a solution that runs in a server-side context, you should try to use components that have been made safe for unattended execution. Or, you should try to find alternatives that allow at least part of the code to run client-side. If you use an Office application from a server-side solution, the application will lack many of the necessary capabilities to run successfully. Additionally, you will be taking risks with the stability of your overall solution.
Read more about that in the Considerations for server-side Automation of Office article.
If you deal with open XML documents only you may consider using the Open XML SDK instead. See Welcome to the Open XML SDK 2.5 for Office for more information.
Related
When perform redaction on smart art object it gives below error:
ComEXception (0x80040155): Interface not registered
Failed to find proxy registration for IID: {}
at Microsoft.Office.Core.TextFrame2.get_TextRange()
It was working fine with ms office 2016. but, facing the above error in a machine with ms office 2019.
any suggestions?
Thanks!
Most probably there is a problem with windows registry keys for Office applications. I'd suggest repairing Office to recover the broken records in the windows registry. For example, you may find the following similar threads helpful:
.NET COMException Interface non registered
Interface not registered (Microsoft.Office.Interop.Outlook)
I have a .Net C# application that manipulates Word documents.
I am using Microsoft.Office.Interop.Word.dll, part of Office 2010, product version 14.0.xxx. Invoking:
using Microsoft.Office.Interop.Word;
...
Application app = new Application();
causes the following error:
Retrieving the COM class factory for component with CLSID {000209FF-0000-0000-C000-000000000046} failed due to the following error: 80080005 Server execution failed (Exception from HRESULT: 0x80080005 (CO_E_SERVER_EXEC_FAILURE)).
I also noticed that when this error is generated, an instance of WINWORD.EXE is created and hangs, but the file is associated to Office 365, product version 16.0.xxx.
I am assuming that the (at least one) source of the error is the incompatibility between the .dll I'm using and the version of Word installed on my development machine.
QUESTION
Is it possible to perform office automation without having Microsoft Office installed on the server?
You don't need to install MS on your Server to use Office Automation!.
Microsoft does not currently recommend, and does not support, Automation of Microsoft Office applications from any unattended, non-interactive client application or component (including ASP, ASP.NET, DCOM, and NT Services), because Office may exhibit unstable behavior and/or deadlock when Office is run in this environment.
Is it possible to perform office automation without having Microsoft Office installed on the server?
No, it is not possible. Instead, you may consider using the Open XML SDK if you deal with open XML documents only. Otherwise, you may consider using any third-party components designed for the server-side execution, for example, Aspose.
The Considerations for server-side Automation of Office article states the following:
All current versions of Microsoft Office were designed, tested, and configured to run as end-user products on a client workstation. They assume an interactive desktop and user profile. They do not provide the level of reentrancy or security that is necessary to meet the needs of server-side components that are designed to run unattended.
Microsoft does not currently recommend, and does not support, Automation of Microsoft Office applications from any unattended, non-interactive client application or component (including ASP, ASP.NET, DCOM, and NT Services), because Office may exhibit unstable behavior and/or deadlock when Office is run in this environment.
If you are building a solution that runs in a server-side context, you should try to use components that have been made safe for unattended execution. Or, you should try to find alternatives that allow at least part of the code to run client-side. If you use an Office application from a server-side solution, the application will lack many of the necessary capabilities to run successfully. Additionally, you will be taking risks with the stability of your overall solution.
i have developed a website that allows users convert existing word file to PDF and download it, included references to Office.interop.word, and the site works fine on my development machine. When I uploaded it to my production server the functions not working in the server, In the server also installed MS-word.
even i tried below methods
In the command line put DCOMCNFG
Component Services -> Computers -> My Computer -> DCOM Config
Find "Microsoft Word 97 - 2003 Document" (If it is missing check if your Word is also 64 bit (if your Windows is))
Right click -> Properties
Go To Tab Security and Edit the "Customize" radio buttons so that IIS_IUSRS could have rights for launch and access
Go to Tab Identity and choose "The interactive user"
all this fails then i have tried to tab "General" and in "Authentication Level" drop down choose "None".
still the error continue...
Error : "Retrieving the COM class factory for component with CLSID {000209FF-0000-0000-C000-000000000046} failed due to the following error:
80080005 Server execution failed (Exception from HRESULT: 0x80080005 (CO_E_SERVER_EXEC_FAILURE))."
Can any one help me?
You have reached a dead end. Running Office programs inside an ASP.NET webserver is not supported:
Microsoft does not currently recommend, and does not support, Automation of Microsoft Office applications from any unattended, non-interactive client application or component (including ASP, ASP.NET, DCOM, and NT Services), because Office may exhibit unstable behavior and/or deadlock when Office is run in this environment.
I would suggest to find other ways to do what you want. There are a lot of libraries capable of reading and writing Office documents without using Office itself.
I have an application that uses Microsoft.Office.Interop.Excel, when I deploy it on machines where there isn't any version of MS Office I get the following error
I tried installing VSTOR as indicated in this so answer COM object with CLSID {00024500-0000-0000-C000-000000000046} is either not valid or not registered
but this didn't solve the issue.
If you need to work only with open XML documents (*.xslx) you may consider using the Open XML SDK. See Welcome to the Open XML SDK 2.5 for Office for more information.
In case of binary file format you need to use any third-party components that don't required Office/Excel installed on the machine.
Pay special attention to the following fact:
Microsoft does not currently recommend, and does not support, Automation of Microsoft Office applications from any unattended, non-interactive client application or component (including ASP, ASP.NET, DCOM, and NT Services), because Office may exhibit unstable behavior and/or deadlock when Office is run in this environment.
If you are building a solution that runs in a server-side context, you should try to use components that have been made safe for unattended execution. Or, you should try to find alternatives that allow at least part of the code to run client-side. If you use an Office application from a server-side solution, the application will lack many of the necessary capabilities to run successfully. Additionally, you will be taking risks with the stability of your overall solution.
Read more about that in the Considerations for server-side Automation of Office article.
You can't use Microsoft Interop libraries if MS Office is not installed. You might want to look at alternative options to read Excel or Word files. There are many free and (paid) C# libraries you could use for this purpose, for example:
https://exceldatareader.codeplex.com/
https://github.com/ExcelDataReader/ExcelDataReader
You need download and install Microsoft Office {year}: Primary Interop Assemblies - it's free.
I am using Microsoft.Office.Interop.Excel to read an excel file and change some cells. It works perfectly with xls files.
I would like to know that, if I deploy the application to the client. They have to install the whole Microsoft Office application? as I think the only dll will not work, right?
Thanks in advance.
Yes, the clients must have Office installed.
I must add a warning, Interop is awkward you better use other (open source) libraries like NPOI or EPPlus for .xlsx- 2007 excel sheets for automation.
Update:
Additional to the awkward of interop, It's unsafe when using in servers!!! see here:
"Microsoft does not currently recommend, and does not support,
Automation of Microsoft Office applications from any unattended,
non-interactive client application or component (including ASP,
ASP.NET, DCOM, and NT Services), because Office may exhibit unstable
behavior and/or deadlock when Office is run in this environment."
If you know there are only .xslx files, you don't need Excel if you use the Open XML Api from Microsoft. It can read Excel files perfectly.
In case were Open XML and Excel interop is not an option, I would recommend Aspose. They have a nice suit of Office compatible components, including for Excel. And they are built for the server. We are using them since 5 years and it works pretty well.