XLL File Extension

XLL file icon
Excel Add-In Format
  • Developer
    Microsoft
  • Category
  • Popularity
    3.3 (3 votes)

What is XLL file?

XLL filename suffix is mostly used for Excel Add-In Format files. Excel Add-In Format format was developed by Microsoft. Files with XLL extension may be used by programs distributed for , Mac OS, Windows platform. XLL file belongs to the Plugin Files category just like 140 other filename extensions listed in our database. Microsoft Excel supports XLL files and is the most frequently used program to handle such files, yet 3 other tools may also be used. Software named Microsoft Excel was created by Microsoft Corporation. In order to find more detailed information on the software and XLL files, check the developer’s official website.

Programs which support XLL file extension

Below you will find an index of software programs that can be used to open XLL files divided into 3 categories according to system platform supported. Files with XLL suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

Programs that support XLL file

How to open file with XLL extension?

Problems with accessing XLL may be due to various reasons. Fortunately, most common problems with XLL files can be solved without in-depth IT knowledge, and most importantly, in a matter of minutes. We have prepared a listing of which will help you resolve your problems with XLL files.

Step 1. Install Microsoft Excel software

The main and most frequent cause precluding users form opening XLL files is that no program that can handle XLL files is installed on user’s system. This issue can be addressed by downloading and installing Microsoft Excel or different compatible program, such as Microsoft Office, Microsoft Office Mobile. The full list of programs grouped by operating systems can be found above. If you want to download Microsoft Excel installer in the most secured manner, we suggest you visit Microsoft Corporation website and download from their official repositories.

Step 2. Update Microsoft Excel to the latest version

You still cannot access XLL files although Microsoft Excel is installed on your system? Make sure that the software is up to date. Software developers may implement support for more modern file formats in updated versions of their products. If you have an older version of Microsoft Excel installed, it may not support XLL format. All of the file formats that were handled just fine by the previous versions of given program should be also possible to open using Microsoft Excel.

Step 3. Assign Microsoft Excel to XLL files

If the issue has not been solved in the previous step, you should associate XLL files with latest version of Microsoft Excel you have installed on your device. The process of associating file formats with default application may differ in details depending on platform, but the basic procedure is very similar.

The procedure to change the default program in Windows

  • Right-click the XLL file and choose Open with option
  • Click Choose another app and then select More apps option
  • Finally select Look for another app on this PC, point to the folder where Microsoft Excel is installed, check the Always use this app to open XLL files box and conform your selection by clicking OK button

The procedure to change the default program in Mac OS

  • By clicking right mouse button on the selected XLL file open the file menu and choose Information
  • Find the Open with option – click the title if its hidden
  • Select Microsoft Excel and click Change for all...
  • If you followed the previous steps a message should appear: This change will be applied to all files with XLL extension. Next, click the Continue button to finalize the process.

Step 4. Ensure that the XLL file is complete and free of errors

You closely followed the steps listed in points 1-3, but the problem is still present? You should check whether the file is a proper XLL file. Being unable to access the file can be related to various issues.

1. The XLL may be infected with malware – make sure to scan it with an antivirus tool.

Should it happed that the XLL is infected with a virus, this may be that cause that prevents you from accessing it. Immediately scan the file using an antivirus tool or scan the whole system to ensure the whole system is safe. XLL file is infected with malware? Follow the steps suggested by your antivirus software.

2. Ensure the file with XLL extension is complete and error-free

If the XLL file was sent to you by someone else, ask this person to resend the file to you. During the copy process of the file errors may occurred rendering the file incomplete or corrupted. This could be the source of encountered problems with the file. If the XLL file has been downloaded from the internet only partially, try to redownload it.

3. Ensure that you have appropriate access rights

There is a possibility that the file in question can only be accessed by users with sufficient system privileges. Log in using an administrative account and see If this solves the problem.

4. Check whether your system can handle Microsoft Excel

If the systems has insufficient resources to open XLL files, try closing all currently running applications and try again.

5. Verify that your operating system and drivers are up to date

Latest versions of programs and drivers may help you solve problems with Excel Add-In Format files and ensure security of your device and operating system. It may be the case that the XLL files work properly with updated software that addresses some system bugs.

Do you want to help?

If you have additional information about the XLL file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on XLL file.

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