unchanged file (excel)

[Cobb]

With an unchanged file (excel) I am prompted to save the "changed" file upon
closing. Only seems to happen on excel files.

 

[JE McGimpsey]

If you have a volatile function, the automatic calc on opening will
cause a change that prompts the Save.

Volatile functions include NOW(), TODAY(), RAND(), AREAS(), CELL(),
COLUMNS(), INDEX(), INDIRECT(), OFFSET(), ROWS().

 

[Steve H.]

This can also happen when you have links to other workbooks in your file.