1. If your proxy-admin machine can access the Internet, because the machine DNS may not be able to correctly resolve and update the domain name, you can specify DNS to start proxy-admin.
Linux run example
LIC_DNS=8.8.4.4:53 proxy-admin"
Windows run example
set LIC_DNS=8.8.4.4:53
.\proxy-admin.exe
2. If proxy-admin cannot directly access the Internet in an intranet environment, you can start an http proxy on a machine that can access the Internet, and then use it for proxy-admin.
For example: proxy-admin is at 192.168.1.10 and cannot directly access the Internet.
The machine 192.168.1.200 can access network, and you can run a http proxies in the machine. ./proxy http -p :8080 -q 8.8.4.4:53
Execute the run command before in machine 192.168.1.10. LIC_PROXY=http://192.168.1.200:8080 proxy-admin
3. If there is a ready-made http proxy in the intranet, then there is no need to start a proxy in step 2. system environment LIC_PROXY can directly use the ready-made http proxy.