Hi again,

Am Thu, 5 Sep 2013 13:38:37 +0200 schrieb Claus Busch:

in B2 of Book2:
=SUMPRODUCT(--([Book1]Sheet1!$A$2:$A$100=$A2),--([Book1]Sheet1!$B$2:$B$100=B$1))

sorry, I had a false sheet name.
Try:
=SUMPRODUCT(--([Book1.xlsx]Tabelle1!$A$2:$A$100=$A2),--([Book1.xlsx]Tabelle1!$B$2:$B$100=B$1))
or in Excel version 2007 or later:
=COUNTIFS([Book1.xlsx]Tabelle1!$A$2:$A$100,$A2,[Book1.xlsx]Tabelle1!$B$2:$B$100,B$1)


Regards
Claus B.
--
Win XP PRof SP2 / Vista Ultimate SP2
Office 2003 SP2 /2007 Ultimate SP2