WordProcessingDocument.Open a very long time to open

Question

Hello! I'm using the OpenXML SDK to handle docx documents.
Because of what may be a long time to open the document using the methodWordProcessingDocument.Open ("path_to_docx_file", true)? On some computers, open the document takes about 15 seconds, at some instant ... What factors influence the opening of the document? Powerful computer, Intel Core i5, 16GB RAM ...
File size 10kb
Sorry for my English.
Thanks in advance for your help!

Answer 1

Hi Gennady Bayanov,
Thank you for posting. 
I will help you involve others to help you. There might be some delay about the response. Appreciate your patience.
Best Regards,

---

Bruce Song [MSFT]
MSDN Community Support | Feedback to us

Answer 2

Hi Gennady,

Please correct me if I misunderstand your issue. On some
systems the document takes as long as 15 seconds to open. On other identical
systems the document opens instantly.

The answer to your question “What factors influence the
opening of the document?” is that there are many possible factors that suggest
the following questions.

Do all systems have the same version and service pack level
of the operating system, and the same service pack level of Microsoft Office?

Is the path to the document to a location on the computer or
to a network server or SharePoint location?

Do all of the systems have the same version and level of the
XML parser (C:\Windows\System32\MSXML6.dll)? (See the following content:

Upgrading to MSXML 6.0 - Microsoft XML Team's WebLog - Site Home ...
http://blogs.msdn.com/b/xmlteam/archive/2007/03/12/upgrading-to-msxml-6-0.aspx
)

Is the delay seen the first time the .docx file has been
opened since the computer was last re-booted, or does it always happen on those
computers exhibiting the problem?

If you open the document through the user interface is there
a delay?

Does the system have Word Add-ins? If so, does preventing
those from loading change the performance?

Please let us know if you have any questions about items in
the list above.

Please consider the above list of things that may influence the opening of the
document and post a reply that tells us whether changing any of those helped
resolve the behavior.
Regards,
Chris Jensen
Senior Technical Support Lead

---

Chris Jensen

Answer 3

Hi Bruce Song and cjatms!

Thank you for your answers.

The configuration of the computer on which the document is opened for a long time:
OS: Microsoft Windows 7 Professional Version 6.1.7601 Service Pack 1 Build 7601System Type: x64-based PC
Processor: Intel (R) Core (TM) i5-2500K CPU@3.30GHz, 3301 Mhz, 4 Core (s), 4Logical Processor (s)
Installed Physical Memory (RAM): 16,0 GB
Total Physical Memory: 15,9 GB
Available Physical Memory: 13,6 GB
Total Virtual Memory: 31,8 GB
Available Virtual Memory: 29,3 GB
Page File Space: 15,9 GB

MSXML Version: 6.30.7601.17514 C: \ windows \ system32 \ msxml6.dll

Microsoft Office is not installed.

The delay is always, every time you start the application.
An example of a console application that runs more than 10 seconds:

class Program
{
    static void Main (string [] args)
    { 
        try  
        {
            var document = WordprocessingDocument.Open ("testin1.docx", true);    
            document.Close();          
        }     
        catch (Exception exception)   
        {   
            Console.WriteLine (exception.Message);   
        }   
    }  
}

Answer 4

Hi Gennady,

When I built and ran your console app on a Windows 7 system the .docx file opened and closed in less than 1 second.  Here is the totality of my Visual Studio 2010 project (after adding appropriae references):

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using DocumentFormat.OpenXml.Packaging;

namespace WordXMLConsoleApplication6
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                var document = WordprocessingDocument.Open("testin1.docx", true);
                document.Close();

            }
            catch (Exception exception)
            {
                Console.WriteLine(exception.Message);
            }
                    

        }
    }
}

You show nothing in your system description that suggests an explanation for your issue, but something that you haven't identified is responsible. If you have another system that doesn't demnstrate the delay (you said that at "at some instant " about the delay) please look closely at the security settings, location of the .docx file, location of the Open XML SDK, network traffic, and other aspects of the environments of the two systems - the slow one v. a fast one.

Regards,
Chris Jensen
Senior Technical Support Lead

---

Chris Jensen

Answer 5

Hello!
We were able to pinpoint the cause of the slow work of the program, as it turned out it was not in the method of opening the document, and in the assemblyDocumentFormat.OpenXml.dll.
If you have a reference to this assembly, the program is loaded for a long time, then the document opens and closes instantly. The delay comes at the moment of first contact to the assembly DocumentFormat.OpenXml.dll.
Build DocumentFormat.OpenXml.dll registered in GAC

Answer 6

Hello!

The problem solved by setting the properties TragetFramework 4.0

Thank you all for your help!