On a daily basis, the firewall reports the following error:
opaque: Failed to check Content content upgrade info due to generic communication error
Connectivity to the update server has been verified and no issues were found.
Issue
This error message occurs if two or more content updates are scheduled at the same time (example: anti-virus and Apps-Threats).
Resolution
From the Device > Dynamic Updates page, change the schedule for every content database so the update times are not equal or close together, add a shift in minutes if two update schedules do come close together.