Microsoft Excel is an important tool for many people in their academic and professional endeavors. One common challenge that users face is encountering the error ...

If you are unable to open an Excel, Word, or PowerPoint attachment from Microsoft Outlook or a file from the Internet, and you get an error message, The file is ...

If you see the “The file couldn’t open in protected view” error while opening Microsoft Excel, the solutions listed in this post may help you resolve the issue ...

If Microsoft Excel fails to recognize a file in the XLSX or XLS format, the data contained in the file could be corrupted. When you open a corrupted workbook in Excel, the program should automatically ...

We need to import data from Excel file from our client. Recently we migrated to ClosedXML from EPPlus due to the change of license. The migration progress is quite smoothly until the acceptance test ...

Occasionally these library files get corrupted, producing errors like the one you have encountered. The mso9.dll apparently is particularly prone to getting corrupted, and it usually causes troubles ...