After click "Activate" license, it shows up "License activation failed."
Or after click "Transfer" to transfer license, it shows up "License transfer failed."
1. You didn't use LAN 1 port.
2. You didn't set up your Primary DNS.
3. it's your Network environment issue. NVR cannot connect to the license server.
Please refer to below link for Offline Activation and Offline Transfer.
Offline Activation: How to do the Offline Activation in Titan
Offline Transfer: How to do the Offline Transfer in Titan
4. If this issue still persist please contact us on our eHelpDesk.