Opening an MSOX File

The MSOX file type is primarily associated with Microsoft Office.

MSOX	File extension: MSOX
	File type:	document file

What is an MSOX file

MSOX files mostly belong to Microsoft Office. MSOX files are Office Open XML documents used by Microsoft Office applications, especially Microsoft Word. They are stored as a ZIP archive that contains many XML files. This design breaks down the content, layout, and metadata into individual XML parts that work together to form a complete document.
Key details summarized by FilExt.com include:

• They hold structured document data in XML format.
• The ZIP container helps with file repair and extraction of parts.
• They follow the Office Open XML standard used in modern Office documents.
• They are also known as Microsoft Office XML Format.

FilExt.com note: You can open and view these files with Microsoft Office products, such as Microsoft Word, or with other office suites that support the Office Open XML standard. More information is available at Microsoft Office.

How to open MSOX files

You need a suitable software like Microsoft Office to open an MSOX file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your MSOX file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a MSOX file directly in the browser:. Just drag the file onto this browser window and drop it.

Online MSOX Text Viewer

Choose your .msox file to analyze

or drag and drop it here

Online File Viewer

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MSOX file format details:

If you can determine the file format, the associated program can also be determined. Each file format has a unique extension and almost always a unique signature. For example, Microsoft Word documents have the extension .docx and the signature (usually the first 3 characters in this file) PK. Frequently, however, one file extension is used by different programs for different file formats, and one file format for different file extensions. When there is a problem with a file, the first step to solving it is to determine the file format. Our evaluation of the MSOX files is as follows:

The file type with the extension 'MSOX' is primarily used by a single program. The following file formats are most commonly found in MSOX files:

• 99% of all MSOX files are based on the zip format, so multiple files are compressed and stored together in one MSOX file. A typical number of included files is 18. File names inside are always [Content_Types].xml, \_rels\.rels, \docProps\app.xml, \docProps\core.xml, \word\_rels\document.xml.rels, \word\document.xml, \word\fontTable.xml, \word\settings.xml, \word\styles.xml and \word\webSettings.xml. If you want to see the included files and images, simply rename the file extension to .zip and double-click it. MSOX files can be up to 140 MB in size, but are often around 16 KB - 2 MB. Several words can almost always be found in the files, e.g. [Content_Types].xml.

All the rest of the MSOX files (1%) have different formats. If you want to find out which format your MSOX file belongs to, just click on the button "Choose your .msox file to analyze".