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Details of extension .xll

On this page, we're going to take a closer look at the .xll file extension, which is related to Microsoft Excel Add-in. We'll explain what exactly a .xll fileformat is and how you can use it. If you're interested in learning more details about this type of file, we'll show you where to find them. And if you ever need to convert .xll files into different formats, we'll give you some tips on how to do that too. Let's see the file format associated with this file extension!

Contents

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xll file - Microsoft Excel Add-in

Microsoft Excel Add-in

The XLL file is a Microsoft Excel Add-in.
Category: Document files
Application: Microsoft Excel
Program name: excel.exe
Mime-type: application/vnd.ms-excel
Magic bytes (HEX): -
Magic string (ASCII): -
Aliases:
-
Related extensions:
.qpx Quattro Pro QuickColumn Settings Data
.wq1 Quattro Pro Spreadsheet
.udf Microsoft Excel User Defined Function Data
.sls8 Microsoft Excel 98 for Mac Template
Links:
-

The .xll file extension might not only belong to a single type of file, there could be various kinds that use it. Keep in mind that files with the .xll extension may contain various content types. If you have helpful information about this extension, write to us!

Could someone have spelled the .xll file extension wrong?

In our database, we came across the following similar extensions:

.xol Swiss Map Overlay
.all AlligatorSQL Project
.xml Cinelerra Video Project
.xlp SAP BO Xcelsius Add-On Package Project
.xli Siemens NX Log Data
.xil Xilize Markup Source

The .xll extension is frequently misused

People sometimes confuse the .xll filename extension. Based on the searches on our site, here are the most common misspellings from the past year.

xol (1), all (1), xml (1), xlp (1), xli (1), xil (1), xlm (1), xlk (1), ll (1), cll (1)

Having trouble opening a .xll file?

If you want to open a .xll file on your computer, you just need to have the appropriate program installed. Incorrect settings for the .xll association can trigger this error.

Windows can't open this file:

File: example.xll

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2016/2019/2022, Windows 7, Windows 8, Windows 10, Windows 11, Linux, Mac OS X, macOS, iOS, Android

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