Clients show as offline and do not receive policy updates or submit status and alerts.
The local client user-interface will not open.
On August 10th, 2015 Microsoft released
KB3076895, a critical security update for Windows operating systems. The changes made by the update prevent the Endpoint Protection Small Business Edition (Hosted) client from communicating with the Hosted Portal.
Microsoft has created an on-demand hotfix for the issues caused by the security update. The hotfix and instructions are available at: