If you cannot open an Excel file and see Excel cannot open the file because the file format or extension is not valid error, see this post.

If Microsoft Excel opens a Blank screen when you open an existing file, then you can stop Excel from opening a Blank workbook or sheet.

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How to watch the 2025 US Open ESPN will carry the 2025 US Open. Matches will air on various ESPN properties, including ESPN, ESPN Deportes, ESPN2, ESPN+ and ABC.

You can have Copilot generate your formulas in Excel now, but it doesn't sound ready for prime time.

The US Open, the final major tournament of the tennis calendar, is set to begin Monday with qualifying matches.

These 46 Pro Excel Tips Will Transform You Into a Spreadsheet Magician Microsoft's spreadsheet program can do way more than you might realize. These are the hacks and tricks you need to know.

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US Open 2025: Live updates, results, schedule, scores, bracket as Aryna Sabalenka goes back-to-back for title Championship weekend is here in New York and the final matchups are dripping with intrigue ...

When you go to open the file, Excel gives you what appears to be a blank workbook—until you click Unhide again.