If hyperlinks are not opening or working in your Excel workbook, here are the solutions you can use to fix the problem: Recreate or edit the hyperlink. Rename the target file and delete the pound ...

If Excel Online is not working and you see errors Couldn't Open the Workbook, or Request Was Taking Too Long, ... Go to File > More… > Options. Click on Trust Center on the left panel.

Launch Microsoft Excel and then press "Alt-F" to switch to the File tab. Select "Options" from the menu, and then select "Manual" from under Calculation Options on the Formulas tab.