Save as XLSM

Excel workbooks with VBA in them need to be saved in a special way. When you save, choose Excel Macro-Enabled Workbook:


Notice the extension: xlsm. So the file above will be names puppies.xlsm.

Aren't puppies cute?

Puppy! Puppy! Puppy! Puppy! Puppy!

Well, some are dogs, but they're all puppies at heart.

When you open an XLSM file, you'll get warnings:



You get to decide whether you trust the file.