The archived Windows pages describe a desktop GUI with Server Status and source-statistics tabs. Those pages explain an older implementation. The current release package must be evaluated from its own installer, executable and included instructions.
Choose a real release package
Obtain the Windows installer from the official Icecast download page. Record the release and verify the publisher or provided integrity information through the official distribution channel. Do not interpret old lists mentioning Windows NT, XP or Server 2003 as a present-day security or compatibility recommendation.
The 2.5.0 Windows documentation still contains forward-looking wording about service support. That wording alone does not prove a service feature in the package you received. Inspect its actual installed helper tools and help output. Do not invent service-install switches or assume an old GUI screenshot matches the current program.
Locate the configuration the process uses
Use absolute paths for web, admin and log directories when working directories could differ between an interactive launch and a service. The account running the process needs access to those directories and any TLS key. Keep the configuration and private files outside served content.
Start with a loopback-only socket and a single test source. Check the log for the runtime version and loaded configuration. Then evaluate firewall rules, bind addresses and IPv4/IPv6 behaviour on the actual system. Historical statements about IPv6 omissions are version-specific and must not substitute for a current test.
Verify service and interactive behaviour separately
A working interactive process does not establish that an automatically started service uses the same file or account. If your package provides service operation, test startup, log access, source reconnect and clean shutdown in that mode. The Unix changeowner and chroot examples are not a Windows setup recipe. Keep a known-good configuration and a documented way to stop the test process before enabling broader access.