._XLSX File Extension

._XLSX File Extension

Renamed Microsoft Excel Spreadsheet

Developer N/A
Popularity
3.1  |  13 Votes
Category Spreadsheet Files
Format Zip

What is a _XLSX file?

An _XLSX file is a Microsoft Excel spreadsheet that has had its extension changed from .XLSX to ._xlsx. A user or program may have changed the file's extension on purpose or by accident. _XLSX files can be opened in Microsoft Excel and other spreadsheet programs after you rename them to use the .xlsx extension.

More Information

_XLSX files are almost always renamed XLSX files. Most commonly, email programs such as Windows Live Mail mistakenly produce _XLSX files. This happens when a user attaches a spreadsheet whose filename ends in . to an email.

For example, if you attach a spreadsheet named spreadsheet..xlsx to an email, Windows Live Mail will rename that file to spreadsheet._xlsx. This issue also occurs when users attach .DOC, .DOCX, and .XLS files to emails.

While XLSX, and thus _XLSX, files are typically created by Microsoft Excel, they can also be created using other spreadsheet programs, such as OpenOffice Calc or Apple Numbers. After renaming your _XLSX file to use the .xlsx extension, you should be able to open the file in any of those programs.

How to open a _XLSX file

After renaming your _XLSX file to use the .xlsx extension, you can open it in any program that opens XLSX files. These include:

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Programs that open or reference _XLSX files

Windows
Must be renamed to .xlsx then opened as an XLSX file
Mac
Must be renamed to .xlsx then opened as an XLSX file
Linux
Must be renamed to .xlsx then opened as an XLSX file
Web
Must be renamed to .xlsx then opened as an XLSX file
iOS
Must be renamed to .xlsx then opened as an XLSX file
Android
Must be renamed to .xlsx then opened as an XLSX file
Chrome OS
Must be renamed to .xlsx then opened as an XLSX file
Updated January 29, 2021

Verified by FileInfo.com

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