Management Center license download fail (invalid) when proxied.
"(invalid)" error when attempting to download the MC license from the Command Line Interface (CLI).
Typical proxy setup has authentication, web access and SSL interception policy in place that can break Management center connection to the licensing server at: https://bto-services.es.bluecoat.com.
If proxy authentication enabled. Ensure to confirm Management Center (MC) Proxy settings has the correct proxy information configured and here is the command to valid it.
Management Center# show http-proxy HTTP Proxy settings: Enabled: true HTTP Proxy host: 10.72.122.62 HTTP Proxy port: 8080 Username: test Password: *******
If license download still failed after confirming the proxy settings, then SSL interception policy could be involve and here is how to disable it.
If you are in Transparent proxy deployment, then simply add the MC ip-address in the proxy static bypass list.