While searching for an answer to the question - How to open the XLL_ file? - you probably found websites, which offer software that was able to open any file extension. Do not be fooled, there is no one program that will allow you to work with any file extension, including the XLL_ file. Each program contains a different type of data and you need specialized software to properly work with the XLL_ file. Here is a list of programs that are designed to work with the XLL_ file - remember, these applications are able to open at most a few file extensions, they are designed to work with a specific data type.
| File type | Microsoft Excel 4 For Mac Add-in |
| Developer | Microsoft Corporation |
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If after installing the program from a list, you still cannot open a file with the XLL_ extension, the reason may be that the file is damaged. The solution may be to find a new copy of the XLL_ file you want to open
In this case, the easiest way is to use the tool built into the operating system for association of the XLL_ file with applications to support it. Double click on the file you cannot open - the operating system will display a list of programs that are likely to work with your XLL_ file. Choose one of them, or select the location on a disk where you installed one of the applications from our list. Windows should then open the XLL_ file using the program installed earlier.
Entries containing links of the XLL_ file extensions with applications is located in the HKEY_CLASSES_ROOT. If you do not know how to get to the Windows Registry, or how to make changes in it, ask a specialist for help. Lack of knowledge on the subject may cause irreversible changes on your computer.
There may be a situation when a computer virus passes itself off as the XLL_ file. In this case, such a file will definitely not be opened. Download a good antivirus program and scan the XLL_ file mentioned. If the antivirus application detects malicious data, it may signify that the XLL_ file is infected.
| XLS | Microsoft Excel 97 To 2003 Workbook Format |
| XLGC | ExpressK Database Format |
| XLC3 | Microsoft Excel 3 For Mac Chart |
| XLA8 | Microsoft Excel 98 For Mac Add-in |
| XLW4 | Microsoft Excel 4 For Mac Workbook |
| XLD | Microsoft Excel Dialogue Format |
| XLB | Microsoft Excel Toolbars Format |
| XLV | Microsoft Excel VBA Module Format |
| XLW | Microsoft Excel Workspace Format |
| XLC4 | Microsoft Excel 4 For Mac Chart |
