When a Block or User Cancel response rule is used, and an endpoint user opts to cancel the pop-up, the tab in which Outlook Web Access (OWA) is running hangs.
This issue only affects OWA 2007.
If OWA is connected over HTTP, a pop-up message displays "Connection was reset."
If OWA is connected over HTTPS, the same message displays, but the tab hangs.
Refresh the tab to reconnect to OWA.