1) The source workbook needs to be open for Excel formulas to be able to update the links automatically.
2) You need to convert the text you've built into a valid Excel reference.
Try this:
3) If you MUST pull data from closed workbooks, there are VBA alternatives on various websites.
4) If you have direct access to the linked files, you can use: Data.Edit_Links...Update_Values to update the links.
5) Excel does not recognize use of the INDIRECT function to be a link...So the source file would need to be opened for that kind of formula to work.
Does that help?
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