Tips to open XLL file

Can't open the XLL file? You are not the only one. Thousands of users face similar problems every day. Below you will find tips on how to open XLL files as well as a list of programs that support XLL files.

XLL file extension

File Name Excel Add-In Format
File Developer Microsoft
File Category Plugin Files

The XLL file is supported on 3 operating systems. Depending on your operating system, you may need different software to handle the XLL files. Below is a summary of the number of programs that support and open the XLL file on each system platform.

Operating systems
  • 2
  • 1
  • 0
  • 0
  • 0
  • 0

What is XLL file?

The file in the XLL format belongs to the Plugin Files category. It was designed by Microsoft. Additionally, the Plugin Files category contains 179 of other files. Excel Add-In Format is supported by 3 operating systems. These systems consist of , Mac OS, Windows, although it may occasionally be found on another system, it will be non-functional. The main program that supports this format is Microsoft Excel. This was created by Microsoft Corporation. This file type can also be opened by 3 other programs. The Microsoft Office, Microsoft Office Mobile programs will also handle the file when the Microsoft Excel program does not fulfill its role.

How to open XLL file?

The main problem with Excel Add-In Format is that the XLL file is incorrectly associated with programs. Thus, when you open XLL, the program selection wizard or some other program starts. This problem can be easily remedied.

The first thing you should do is just "doubleclick" on the XLL file icon you want to open. If the operating system has an appropriate application to support it and there is also an association between the file and the program, the file should be opened.

Step 1. Install Microsoft Excel

In this case, you should first verify that the Microsoft Excel application is installed on the computer. To do this, enter the name Microsoft Excel into the system search engine. In the absence of an appropriate program, its installation in the vast majority of cases will fix the problem. Below you will find a list of applications that support XLL files.

Programs to open XLL file

Remember to download programs supporting XLL files only from verified and safe sources. We suggest using the websites of software developers.

Step 2. Create association of Microsoft Excel with XLL files

However, it may happen that the application itself does not cause the XLL file to open in the Microsoft Excel application, but you can set it manually. This option is available from the level of Properties of a specific file available in the context menu. The window will show, among other things, the type of the file and the information by which the program is used to launch the file. Changes can be made using the "Change" button. The program should be visible in the window, otherwise it should be selected manually using the "Browse" button and the program installation directory should be indicated. Checking the "Always use the selected program ..." box will permanently associate the XLL file with the Microsoft Excel program.

Step 3. Update Microsoft Excel to the latest version

If, however, after binding Microsoft Excel with Excel Add-In Format there were still problems, you should update the program to the latest version. Some applications allow you to update from the program level, and for others you need to download the installer from the Microsoft Corporation page and install.

Step 4. Check for the following problems with the XLL file

The problem may also be with the file itself if the above steps don't work. This could be due to the file itself, the cleanest issues are:

Very often, the file may be size 0 or incomplete. Usually this applies to XLL files downloaded from the Internet in case the download did not finish properly. The only repair option is to download the file again.
The most common cause here is computer viruses. Perform a virus scan using available and up-to-date anti-virus software. Alternatively, you can use the scanners available online. The scan should cover the entire computer, not only the XLL file that we want to open. Sometimes virus-infected XLL files cannot be recovered, so make a backup in advance.
Older version of XLL file may not always be supported by the latest software version. These problems are known and are often very easy to fix using the software developers's website.
There can be many reasons for this. The repair method must be adapted to the type of file and damage. Sometimes the program itself has options to repair the most popular XLL file corruption. You can restore the file from a backup or use Microsoft help.
The program indicates that the file is encrypted or corrupted. The encrypted file XLL except for the special designation, works normally, but only on the device where it was encrypted, before transferring it to another machine, decryption is required.
The operating system protects files in some locations (e.g. the root of the system partition) against unauthorized access. These directories are write-protected to them and it's very hard to fix this problem. It is best to move XLL to a different directory.
This problem usually affects more complex files. You may find that another program you are using is preventing you from working with the file. Just close unnecessary programs. Sometimes it is necessary to wait a while before referencing the XLL file again. Some anti-virus or backup software may occupy the XLL file for a certain period of time. If nothing helps, please reset the device.