XLL_ File Extension

What is XLL_ file?

Full format name of files that use XLL_ extension is Microsoft Excel 4 For Mac Add-in. Microsoft Excel 4 For Mac Add-in specification was created by Microsoft Corporation. Files with XLL_ extension may be used by programs distributed for Mac OS, Windows platform. Files with XLL_ extension are categorized as Misc Files files. The Misc Files subset comprises 6033 various file formats. Microsoft Excel supports XLL_ files and is the most frequently used program to handle such files, yet 1 other tools may also be used. Microsoft Excel software was developed by Microsoft Corporation, and on its official website you may find more information about XLL_ files or the Microsoft Excel software program.

Programs which support XLL_ file extension

The list that follows enumerates programs compatible with XLL_ files, divided into 2 categories based on operating system on which they are available. Files with XLL_ extension, just like any other file formats, can be found on any operating system. The files in question may be transferred to other devices, be it mobile or stationary, yet not all systems may be capable of properly handling such files.

How to open file with XLL_ extension?

Being unable to open files with XLL_ extension can be have various origins. What is important, all common issues related to files with XLL_ extension can be resolved by the users themselves. The process is quick and doesn’t involve an IT expert. The following is a list of guidelines that will help you identify and solve file-related problems.

Step 1. Download and install Microsoft Excel

The most common reason for such problems is the lack of proper applications that supports XLL_ files installed on the system. The most obvious solution is to download and install Microsoft Excel or one to the listed programs: Microsoft Office. The full list of programs grouped by operating systems can be found above. One of the most risk-free method of downloading software is using links provided by official distributors. Visit Microsoft Excel website and download the installer.

Step 2. Check the version of Microsoft Excel and update if needed

If you already have Microsoft Excel installed on your systems and XLL_ files are still not opened properly, check if you have the latest version of the software. 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. The latest version of Microsoft Excel should support all file formats that where compatible with older versions of the software.

Step 3. Set the default application to open XLL_ files to Microsoft Excel

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 next step should pose no problems. The procedure is straightforward and largely system-independent

Change the default application in Windows

• Clicking the XLL_ with right mouse button will bring a menu from which you should select the 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

Change the default application in Mac OS

• By clicking right mouse button on the selected XLL_ file open the file menu and choose Information
• Proceed to the Open with section. If its closed, click the title to access available options
• Select the appropriate software and save your settings by clicking Change all
• A message window should appear informing that This change will be applied to all files with XLL_ extension. By clicking Continue you confirm your selection.

Step 4. Verify that the XLL_ is not faulty

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. Problems with opening the file may arise due to various reasons.

1. Check the XLL_ file for viruses or malware

If the file is infected, the malware that resides in the XLL_ file hinders attempts to open it. Scan the XLL_ file as well as your computer for malware or viruses. If the scanner detected that the XLL_ file is unsafe, proceed as instructed by the antivirus program to neutralize the threat.

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

Did you receive the XLL_ file in question from a different person? Ask him/her to send it one more time. It is possible that the file has not been properly copied to a data storage and is incomplete and therefore cannot be opened. When downloading the file with XLL_ extension from the internet an error may occurred resulting in incomplete file. Try downloading the file again.

3. Verify whether your account has administrative rights

Some files require elevated access rights to open them. Switch to an account that has required privileges and try opening the Microsoft Excel 4 For Mac Add-in file again.

4. Verify that your device fulfills the requirements to be able to open Microsoft Excel

The operating systems may note enough free resources to run the application that support XLL_ files. Close all running programs and try opening the XLL_ file.

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

Regularly updated system, drivers, and programs keep your computer secure. This may also prevent problems with Microsoft Excel 4 For Mac Add-in files. It is possible that one of the available system or driver updates may solve the problems with XLL_ files affecting older versions of given software.

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