I'm using Excel 365 and I have Calculation Options set to Manual. As far as I know the Ctrl+Shift+Alt+F9 shortcut is supposed to recalculate all cells in the entire workbook, even if some of them don't need to be recalculated (or something like that). Most of the time it works fine but recently I found one spreadsheet where this shortcut will not always recalculate cells: it will freeze the computer for a few secs meaning it is performing some work but when it finishes most (or all?) cells seem to be untouched. I don't know whether it doesn't recalculate any of them or just some of them. It also seems to be random when this shortcut does and does not seem to work (sometimes it works just fine).
Generally, are there any exceptions or situations where Ctrl+Shift+Alt+F9 might not work (or stop working e.g. upon an error)? I couldn't find anything on google.
F9the keyboard is sending another signal then that's not it. There's a chance it's something specific to my sheet and functions/stuff it uses but unfortunately I cannot post it here for you to check.