Where I work, the “OS Support” and “Application Support” functions are different verticals. Sometimes what constitutes an “OS” and what constitutes an “application” is nebulous. In this case, we needed to install a web-based application but found TCP port 443 was already bound to Windows. Unfortunately, the OS support group disclaims any ownership of “Windows Admin Center” and told me I was welcome to fix it myself. So … oddly, there isn’t any easily located configuration for this thing. You have to go through the add/remove programs and modify the installation of Windows Admin Center.

Select “Change”

You will get the configuration panel — here, you can specify a different port for the Admin Center.

Let the installer complete …

Voila — not using port 443!