About this lesson
Learn about creating and updating external links, and about the potential dangers of external links in Excel.
Creating, updating and the dangers of external links in Excel.
Where/when to use the technique
When you have little alternative but to link to data in another workbook.
- Open the “Source” workbook and the “Target” workbook
- Go to the Source workbook, and select the cell where you’d like the value from Target workbook to show up
- Type = then, using the mouse, navigate to the Target workbook, click the cell and press Enter
- You can now save and close Target workbook and the link will exist in Source workbook
- When you open the Source workbook, you should be prompted to update the data
- If you need to update at other times, go to Data --> Edit Links
- Select the links you wish to update and click Update Values
- To convert links to hard coded values, go to Data --> Edit Links
- Select the links you wish to convert and click Break Link
- Links are set to certain file paths. If the file you’re linking to moves, then your links will break
- If you insert a new row or column in the target workbook, and the source workbook is not open, the source workbooks formulas will NOT update, and your links will point to the wrong places. (In order to modify the target workbook, the source workbook must also be open to avoid this issue.)
- Your ability to email the file to others is impaired. Unless you send them the target file and they put it in the exact same path on their machine, the links will be broken
- If you decide to make a backup copy of your entire solution, you may find your links pointing to the original data copy unless you are very careful. (The proper method to do this is open both the source and target workbooks, save the target under a new name, then save the source under its new name.
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