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 ...
Google Docs Viewer — which allows users to open and view a variety of files directly from within any web browser — now supports another 12 common file types, including Microsoft Excel and PowerPoint. ...
Sometimes, Excel Online may not work as expected and won’t open files. In such cases, you may get error messages, such as ‘Couldn’t Open the Workbook‘, or ...
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