xlsm.zip files do not show as folders in Explorer

[Steph]

I am trying to create an add-in using Excel 2007. When I renamed the xlsm
extension to xlsm.zip, I accidently tried to open the xlsm.zip file with
Notepad instead of double-clicking on the xlsm.zip folder. Now every Excel
xlsm file that I create and then add a .zip extension to appears as a Notepad
file instead of a Windows folder. As a result, I can't open an xlsm.zip
files. Would appreciate your help.

 

[JP]

Open Windows Explorer and go to Tools > Folder Options. Click on the
"File Types" tab and change the file association for .zip files.

--JP

 

[John Mansfield]

Hello,

I recently had this same problem (I'm running Vista). The site below has a
registry fix pertaining to .zip files that helped me. After downloading and
installing the fix, you will need to restart your computer.

http://www.winhelponline.com/articles/105/1/File-association-fixes-for-Windows-Vista.html