Zoom on workbook open

Perhaps it was the Noid who should have avoided me...
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1. Make a copy of your workbook and run the following code on your copy (just in case)
2. With excel open, press ALT+F11 to open the Visual Basic Editor (VBE). From the "Insert" menu, select "Module".
3. Paste the code from above into the empty white space. Close the VBE.
4. From the developer tab, choose "Macros", select the Sub Name, and click "Run".