Our users are reporting that they cannot get logged in to Zimbra WebMail using IE10. All of our users on IE10 are having the same problem. Here is the typical user configuration:

Zimbra Server: 6.0.15 NE
Internet Explorer 10.0.9200.16576, Update Versions: 10.0.5
Windows 7 Service Pack 1

When our users visit the webmail page using IE10, they can enter in their authentication but when they click on Login the page just says Loading... It never ends up logging in.

Is there any way to troubleshoot this?