alphabetical list of extensions

File extension .XLSX

File description

Now if you have started with MS office 2007 then this office will open the XML format files and these files have also became a default opener. MS office also provides the support to read ECMA-376, and even read and write support for ISO/IEC transitional. This format was at first consistent by ECMA.

In early 21th century like in 2000 MS released the first version of XML (extensible markup language) whose format was based for MS excel. This thing was combined in Office XP. A new and latest file format was invented for Microsoft Word File in year 2002.

Description of the problem
If you have on your computer a .XLSX file that you cannot open, you are in exactly the same situation as thousands of other people who have similar problems with this or any other unknown file.

There may be several reasons why you cannot open the file with .XLSX extension. Directly on this website you can find a solution of the most common problem with the .XLSX file – that you do not have on your computer the appropriate program to open the file.
From the list below, select the appropriate program, install it and double click on the icon of a file that did not want to open - the problem with the .XLSX file extension should be solved. However, if this does not happen, go back to the website to learn about other possible causes of the error, which have been described at the bottom of the website.
Spreadsheet Files
File name: Microsoft Excel Open XML Spreadsheet
Programs that will open this file:
Corel Quattro Pro Corel Quattro Pro
Excel Regenerator Excel Regenerator
Full Convert Enterprise Full Convert Enterprise
Gnumeric Gnumeric
LibreOffice LibreOffice
Microsoft Excel Microsoft Excel
Microsoft Office Microsoft Office
Microsoft Works Microsoft Works
Office 365 Office 365
Office Regenerator Office Regenerator
OxygenOffice Professional OxygenOffice Professional
SoftSpire vCard Converter SoftSpire vCard Converter
WordPerfect Office WordPerfect Office
Mac OS
Mac OS
Apple Numbers Apple Numbers
iWork Numbers iWork Numbers
LibreOffice LibreOffice
Microsoft Excel Microsoft Excel
NeoOffice NeoOffice
Gnumeric Gnumeric
LibreOffice LibreOffice
OxygenOffice Professional OxygenOffice Professional
Kingsoft Office Kingsoft Office
The .XLSX file extension can correspond to several not related file formats. If there is more than one file format with the .XLSX extension, you will probably find most of them at this website. Remember that you need to download a program to support a particular file type. So first look through the entire contents of the website to select a program to support just the file you have.

Other possible reasons why your .XLSX file does not want to open

In addition to the problem described above, i.e. the lack of the appropriate application to support the .XLSX file, there may be several reasons that cause problems with opening and operation of the data format:

1. Incorrect version of the installed application

A quite common problem is the lack of application in the appropriate version. Even if you have an application, with the help of which you should open the .XLSX file, you may have a problem with it because of its version. Perhaps in previous versions the application has not yet supported the .XLSX file, so download the update and check again.

2. Incorrect .XLSX file association with the program

If you have already installed the appropriate application, and it is the correct version, the file may not open correctly, because the operating system does not have information that this program supports the file. So you need to "show" which program the computer should use. To do this:

  • Right-click the .XLSX file
  • Go to the "Open with" - then "Choose default program ..."
  • Locate the appropriate application
  • Click "OK"

3. The file is corrupt

It also happens that the file you want to open is corrupt and therefore there is no such possibility. In this situation, you should find its different version, or ask a person from whom you got, to send it again.