The DOCX File Extension

Text Files: Microsoft Office Word (2007+) Document

Run a free instant scan for DOCX file errors

File extensions tell Windows which programs are used to open different types of files. Common file extensions include .txt, .doc, .jpeg, etc. Windows stores information about each file extension (including File Extension DOCX) in the Windows Registry.


If you receive errors when trying to open DOCX files, it could be for the following reasons:

Missing Host Application: Windows doesn't have a default application that is capable of opening, reading and rendering information embedded using the DOCX file specification.

Corrupt File Type Association: The default host application may exist for DOCX file type but its file association with DOCX files was corrupted in Windows Registry.

How to:

We recommend that you download and install PC Health Advisor to fix both types of issues:

Identify and install Host Application: PC Health Advisor scans your PC, identifies the missing host application for DOCX files, and provides you with the most up-to-date copy of the host application.

Repair File Type Association: PC Health Advisor repairs corrupt file type associations so that DOCX files can always be opened and viewed correctly afterwards.

All about file extension DOCX:

This file extension needs further investigation, so please give us a few more days to provide you with an accurate answer. In the meanwhile, we strongly recommend that you download and install PC Health Advisor which would most likely solve your problem in no time at all.

File Type:
File description:
Company / software developer:
File identification strings:
Mime type:
Related links: