Two customer cases show this issue is caused by the reasons given below:
- ProxyAV is not getting NTP updates and device is running behind the current time by years
- An upstream device is doing SSL interception and ProxyAV is not trusting the certificate issued by this device
Respective solutions are given below:
- Provide a correct/working NTP server in the ProxyAV under Advanced > Date/Time Settings > Network Time Protocol. If a working NTP server is not available, navigate to the above link and remove the check mark from “Enable” and “Save Settings”. After the page refreshes, go to Advanced > Date/Time Settings and enter the current date/time manually.
- Bypass SSL interception on the upstream device for ProxyAV’s IP address. If that is not possible, add the CA certificate of the device in ProxyAV under Advanced > CA Certificates > Import.