Module downloads as a .zip file instead of a .modl file / Backup downloads as a .zip file instead of a .gwbk file

When using Internet Explorer, modules are downloaded as a .zip file instead of a .modl file and backups are downloaded as a .zip file instead of a .gwbk file.

When trying to install the module as a .zip, the following error is received:

When trying to install a gateway backup as a .zip, the following error is received:

Change the file extension from ".zip" to ".modl" or from ".zip" to ".gwbk" as is appropriate before installing. Alternatively, you can download the module or backup using a different web browser.

To Change the File Extension (for a module):

You will be asked to confirm that you want to change the file Extension.

Now you should be able to install the module.

If the File Extension is hidden:

You may need to change your settings to be able to see common file extensions. The steps for doing this on Windows is here.