Your network utilizes the Blue Coat Web Filter to block requests that are in the 'none' category. As a result, some requests from Jive are being blocked due to them being in this category. When you try to access those URLs, a message appears that says "Access Denied (policy_denied)".
This article provides information on how to resolve this type of issue.
Please note that assistance with Blue Coat Web Filter related issues is outside the scope of Jive Support. Please work with your organization's IT team to resolve this issue.