File extension XLL
| File type | Microsoft Excel Add-in Format |
| Developer | Microsoft |
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What is a XLL file?
XLL is an extension of files specific to Microsoft Excel. XLL files are used to store add-ons to the program. They contain data that allows extending the functionality of the program. This allows you to increase its capabilities most often by adding new functions to the sheet.
Microsoft Excel is a component that is included in all versions of the Microsoft Office suite. It is one of the most efficient and popular tools of this type on the market.
Program(s) that can open the .XLL file
Windows
Mac OS
How to open XLL files
If you cannot open the XLL file on your computer - there may be several reasons. The first and most important reason (the most common) is the lack of a suitable software that supports XLL among those that are installed on your device.
A very simple way to solve this problem is to find and download the appropriate application. The first part of the task has already been done – the software supporting the XLL file can be found in the table. Now just download and install the appropriate application.
Possible problems with the XLL format files
The inability to open and operate the XLL file does not necessarily mean that you do not have an appropriate software installed on your computer. There may be other problems that also block our ability to operate the Microsoft Excel Add-in Format file. Below is a list of possible problems.
- Corruption of a XLL file which is being opened
- Incorrect links to the XLL file in registry entries.
- Accidental deletion of the description of the XLL from the Windows registry
- Incomplete installation of an application that supports the XLL format
- The XLL file which is being opened is infected with an undesirable malware.
- The computer does not have enough hardware resources to cope with the opening of the XLL file.
- Drivers of equipment used by the computer to open a XLL file are out of date.
If you are sure that all of these reasons do not exist in your case (or have already been eliminated), the XLL file should operate with your programs without any problem. If the problem with the XLL file has not been solved, it may be due to the fact that in this case there is also another rare problem with the XLL file. In this case, the only you can do is to ask for assistance of a professional staff.
Updated 04/26/2022
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How to associate the file with an installed software?
If you want to associate a file with a new program (e.g. my-file.XLL) you have two ways to do it. The first and the easiest one is to right-click on the selected XLL file. From the drop-down menu select "Choose default program", then click "Browse" and find the desired program. The whole operation must be confirmed by clicking OK. The second and more difficult to do is associate the XLL file extension to the corresponding software in the Windows Registry.
Is there one way to open unknown files?
Many files contain only simple text data. It is possible that while opening unknown files (e.g. XLL) with a simple text editor like Windows Notepad will allow us to see some of the data encoded in the file. This method allows you to preview the contents of many files, but probably not in such a structure as a program dedicated to support them.