I am taking note about what happen when Palo Alto licenses expires.
These are weblinks that well explain all details:
Be Aware that if you get unexpected Firewall/VM reboot only 1200 internet sessions are supported. (and this is a big problem in case license renew process is not yet completed)
Indeed here are located Palo Articles that explains how to proceed with license renewal process
Action Required:
To complete the credit renewal process, you will need to follow the instruction in the following document https://docs.paloaltonetworks.com/vm-series/10-2/vm-series-deployment/license-the-vm-series-firewall/software-ngfw/renew-your-software-ngfw-credit-license
Tech Docs:
- VM-Series: https://docs.paloaltonetworks.com/vm-series/10-0/vm-series-deployment/license-the-vm-series-firewall.html
- CN-Series: https://docs.paloaltonetworks.com/cn-series/10-0/cn-series-deployment/secure-kubernetes-workloads-with-cn-series/register-the-cn-series-auth-code.html