What is .DOCX File and How to Open .DOCX Format Files

Have you receive an email attachment or project with a .DOCX file extension and you cannot open this .DOCX file using MS Word?

For those who want to know more about DOCX, it is a brand new document format from Microsoft. The extension is built exclusively for Microsoft word 2007 and 2010 users, which means you cannot open or view the content of .DOCX file if you have an older version of MS Word installed on your computer.

A .DOCX file extension is automatically appended to the file when you save the document in Word 2007 and 2010 version. The difference between .doc files and .docx files is a letter “x” indicating the new .docx format supports open XML standard.

For Opening .docx Files

Docx Format Supported Word – There are plenty of options to open docx files; one way is to download a free Microsoft Compatibility Pack which will allow upgrade your MS word. You can download Microsoft Compatibility pack from here — it’s free and helps you to view the content of docx documents.

Convert Docx to Doc file – Using a free online converter that converts .docx file to .doc file, you can open and view the content inside the file using the default — older — Microsoft Word installed on your system. One such free converter is Zamzar.

Convert Using Google Docs – Upload the document to Google Docs to view, edit and export docx file into another file format easily.

Written by on October 29th, 2008

Self-proclaimed geek, editor of blogote, who loves all things tech.



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  • Anwar


    If there is a Microsoft Word window open before/while installing the converter from Microsoft, close the window before attempting to open the docx file.

    August 05 2010
    CommentsLike
    • William Wester


      People > Backwards compatible means that a new program (newer version) will open files created by an older program (older version). Forward compatible means that a file created by a program today will be able to be opened by by a newer program created tomorrow, but only if the newer program created tomorrow is backwards compatible. Programmers can make a patch which will allow an older version program to open a newer version program’s files. This will make the older program become forward compatible.

      January 25 2010
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      • PieMan


        I Like Pie.

        September 28 2009
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        • jus4u


          I hate Republicans

          September 19 2009
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          • People aren’t stating the proper term for what is ticking them off. Word is backwards-compatible. It’s FORWARDS COMPATIBILITY that is causing people trouble. A document that is 100% forwards-compatible means that even if the file format changes in the future, older versions of the software can still read some or all of it.

            Needless to say, it’s pretty hard to design forwards-compatible formats. Clearly, DOCX and related “X” formats are not forwards-compatible extensions of the previous OLE2 organization that dominated the early 00′s. The header is completely different, too.

            June 12 2009
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            • [...] already posted on what is docx file and how you can open it using the online docx converter i.e, to open docx file format, you have to [...]

              June 04 2009
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              • blogging mom


                thanks for these great tips. I am so glad i was able to convert my file without paying. this is such a helpful article.

                May 29 2009
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                • Rimmer


                  People (liberals?) whining about Microsoft and Wal-Mart. But yet they love their Priuses, Mac, and whatever else. Grow up.

                  I love Windows and shop a Wal-Mart Supercenter weekly.

                  Data: “Are you my enemy?”
                  Varia: “You are a curious one, aren’t you?”
                  Data: “Do you object to the question?”

                  May 17 2009
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                  • Len Levine


                    Well, I have Open Office, so how do I use it to open a docx file?

                    May 07 2009
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                    • Jacky Allan


                      If you want to convert pdf to word or doc, I introduce Tweak PDF Converter. It’s very Good.

                      May 05 2009
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