# Help!! Need to update links from a closed workbook !

#### alwizardus

##### New Member
I am using sumif function to capture data linked to a subordinate workbook.

Thing is I have to open the subordinate workbook all the time for links to update.

Is there not a way to use formulas that do not require other source workbooks to be opened.

I tried Sumproduct, but the data i am pulling is large and CPU cannot handle it - slows computer. Sumif is much quicker.

Is there an Excel Add-in functions that can help with updating cell values from closed workbooks??

Or, is there an affiliate program that can help??

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#### Dannyh1

##### Well-known Member
Hi,

then use SUMIF & INDIRECT.EXT combination.

#### alwizardus

##### New Member
Thanks !

Can you illustrate the formula in detail or give me an example?

My Excel skills are average.

#### Dannyh1

##### Well-known Member
Hi an example would be

=SUMIF(INDIRECT.EXT("'C:\Danny\[book1.xls]Sheet1'!\$A:\$A"),\$A1,INDIRECT.EXT("'C:\Danny\[book1.xls]Sheet1'!\$B:\$B"))

Obviously you could have your file reference (fixed or variable) in another cell e.g. C2 = C:\Danny\[book1.xls]Sheet1'! then it would be :

=SUMIF(INDIRECT.EXT("'"&C2&"\$A:\$A"),\$A1,(INDIRECT.EXT("'"&C2&"\$B:\$B")))

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