Sometimes have to hit enter twice to enter data in cells

Hello,

After an update to both Windows and Excel everything seems to run much slower. I also have to hit enter twice to get some of the cells in a workbook to work. If I do not hit enter twice either nothing happens or it takes a very long time for anything to compute. Looking for suggestions. Thank You

Try repair office if you haven't tried that. Also, another visit to one step update may help.