So, if you are suffering from the ‘Microsoft-Excel-won’t-open’ syndrome, this article is just what you need. In this tutorial, I will cover the reasons why Excel refuses to open and the possible …

Do you find that Microsoft Excel won’t open a file on your computer? If so, your file might be corrupt, or there may be an issue with your Excel app, Windows, or Mac system. We’ll show …

Click File > Open. Click the location and folder that contains the corrupted workbook. In the Open dialog box, select the corrupted workbook. Click the arrow next to the Open button, and then …

Oct 21, 2022 · Here are the four possible causes we’ve gathered behind this error message: How to Fix the “Excel Cannot Open the File Because the File Format or File Extension is Not Valid” …

Sep 26, 2025 · This article published on MiniTool official web offers you 11 ways to solve your Excel files won’t open at all problem. Most of these solutions come from Microsoft’s official …

Oct 11, 2025 · Fixing the “ Excel cannot open the file because the extension is not valid ” error is not difficult. The Check and Correct the File Extension method is the quickest and simplest fix.

Nov 1, 2025 · Excel file not opening problems and Microsoft 365 solutions Excel not opening issues in Microsoft 365 environments typically stem from corrupted installations, conflicting …

Sep 24, 2025 · In this article, we have shared four different methods to solve the problem of ‘Excel cannot open the file because the extension is not valid to verify that the file is not …

Aug 20, 2025 · Few things are more frustrating than opening a Microsoft Word, Excel, or PowerPoint file only to see the dreaded error: “The file is corrupt and cannot be opened.” …

Jan 15, 2021 · Sometimes Excel files don't open properly or don't open at all, which can cause a lot of stress and panic. No one wants to lose important information or create another document …