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 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 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 ...

Here's what worked for me: Try this fix first: Open Excel, go to File > Options > Trust Center > Trust Center Settings > Protected View, and uncheck all the boxes under Protected View. Then restart ...

When an Excel file goes haywire, don't give up hope. Using one of these recovery tricks, you may still be able to salvage the data. When an Excel file goes haywire, don’t give up hope. Using one of ...

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 ...