If Excel Online is not working and you see errors Couldn't Open the Workbook, or Request Was Taking Too Long, then see this post for the fix.

Elsewhere, users can now also access password-protected workbooks on Excel for the Web, meaning there's no need to switch back to a desktop in order to open & interact with secured files.

Then, I’ll present a quick way to force Office 365 to always open a file in the desktop environment, regardless of where you open or save it. I’m using Office 365 on a Windows 10 64-bit system.

When Excel first came to the web, it did so by evaluating all formulas in the cloud, and sending each result to the browser. Although customers get the full power of desktop Excel, they sometimes get ...