Saving Macro-Enabled Workbooks

Hello,
I have a spreadsheet that I'm saving with the purpose of people downloading it at work. Emailing it won't work as changes will be made to it weekly and the list of users that I would need to email it to would be very large and difficult to track. The problem I'm running into is when I save it to our website as a Macro-Enabled Workbook it won't load, it just gives a Page cannot be found. If I save it normally it will load just fine, but the file is 5 times as large and people don't know how to enable macros.

Does anyone have any ideas as to why a Macro-Enabled workbook couldn't be downloaded as a file?
Thanks in advance

Saving it as a zipped file worked perfectly. Thanks!