Can I make an Excel VBA macro available to all workbooks?

Is it possible to write a VBA script in one workbook, and use it in other workbooks in the machine? I guess I'm looking for a way to write a macro package.

EDIT Following the instruction in the link given by Lance, I managed to create the addin, but I cannot see it in the 'Macros' tab. What am I missing?

There are a few ways to do this, here's one link that explains how to create an Excel Addin with VBA code. You can also create other types of addins in other ways, but this is the simplest. There are thousands of references you can search for that talk about how to do this.

No addon making required!

Store it in a special workbook called Personal.xlsb

Steps:

You can make macros available across all your workbooks, by saving them to a special workbook that Excel loads each time it is opened.

• YouTube : How to Create a Personal Macro Workbook in Excel and Why You Need It

• Office Support : Create and save all your macros in a single workbook

• Office Support : Copy your macros to a Personal Macro Workbook

Take advantage of the UserProfile environment variable to aviod that 'different for each user' caveat.

so the standardized Path is: %UserProfile%\AppData\Roaming\Microsoft\Excel\XLSTART

When you record a Macro you can store it afterwards in your Personal Macro Workbook. When you Exit Excel it asks if you want to store it, once you click yes the Macro will become available for all workbooks under Developer => Macros. See also Microsoft support