Microsoft Excel might show ##### in cells when a column isn’t wide enough to show all of the cell contents. Formulas that return dates and times as negative values can also show as #####.
To make a column wider to show cell contents in full, select the right edge of the column header and drag it to the width you want.
You can also try the following:
Alignment Settings, and then check the Shrink to fit box in the Format Cells dialog box.
If numbers have too many decimal places, on the Home tab, select Decrease Decimal.
If dates are too long, on the Home tab, select the Number Format arrow, and pick Short Date.
When Excel shows ##### because the cell has a negative date or time value, make sure that you: