Rollup 1 for Microsoft Forefront Unified Access Gateway (UAG) Service Pack 4 (SP4) contains several changes to the Exchange Server 2013 template that fixes bugs and improves integration.
- Touch-enabled devices may receive download policy violations when users browse mailboxes in Microsoft Outlook Web App.
- The Web Monitor Security event log may contain many "URL Path Not Allowed" events that are logged when users browse Outlook Web App.
- Users may be able to attach files to email messages through Outlook Web App even though the UAG Access Policies deny uploads.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.