This should be the same process as updating Windows, as Microsoft has merged the two: It's best to reboot your computer before starting an update or repair, to reduce the chances of a running program preventing files from being repaired or replaced.
Updating and repairing Excel will often fix things.įollow the steps below – first update, then repair. If an Excel add-in is acting peculiarly (or not at all), it's often because Excel is broken in some way.
