Hi,
I am using this formula in worksheet A in file A that reads from worksheet B from file B.
=SUMPRODUCT(([Kev.xls]Sheet1!$D$2:$D$5000=E11)*([Kev.xls]Sheet1!$B$2:$B$5000=$J$9),[Kev.xls]Sheet1!$L$2:$L$5000)
When I close both files and open worksheet A, it returns as #NA.
If I open worksheet B, then it is fine.
How can I get this formula in worksheet A to work without having to open worksheet B? Thanks.
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