File Extension Library

._XLS File Extension

  • Category: Spreadsheet Files
  • Format: Binary

What are ._XLS files and how to open them?

Can't open ._XLS file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the ._XLS file.

What is a ._XLS file extension?

._XLS file extension has been classified as Spreadsheet Files. The format of ._XLS file is Binary

._XLS is Renamed Microsoft Excel Spreadsheet

An _XLS file is a Microsoft Excel spreadsheet file renamed from ".xls" to "._xls". It may have been renamed by a user on purpose or by accident or another program. _XLS files contain the contents of an .XLS file, which may include one or more worksheets, which store and display data in a table format.

You can rename an _XLS file by changing the "._xls" extension to ".xls". After renaming the file, you can open the XLS file with a variety of programs, such as Microsoft Excel and LibreOffice Calc.

_XLS files are sometimes created by email programs, specifically Windows Live Mail, when sending an XLS file via email. Windows Live Mail may rename it if the filename ends with a "." before the "." in the extension. For example, sample..xls is changed to sample._xls by the email program. This also commonly occurs with .DOC, .DOCX, and .XLSX files.

NOTE: XLS files are typically created by Microsoft Excel. However, they may also be created using another spreadsheet program, such as LibreOffice Calc or Apple Numbers.

How to fix problems with ._XLS files

  1. You need to update the application that you normally use to open ._XLS files. Only the latest version of the software supports the current ._XLS file format
  2. You need to check the ._XLS file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)