Hi @Craig Garland ,
First check the path of your installation to locate where is the webservice running
by default is "C:\Program Files\Microsoft System Center 2016\Virtual Machine Manager" check if you see this folders in "bin\WebConsole\iis"
*Important!: into the iis folder please look for the file web.config make a copy of this file to be sure that you have a backup.
Open the original file and look for the <system.webServer> line and add this :
<httpProtocol>
<customHeaders>
<add name="Strict-Transport-Security" value="max-age=31536000; includeSubDomains" />
</customHeaders>
</httpProtocol>
Save the change and restar the iis, you can use the command iisreset /restart after this you will be able to use HSTS on the port 8101, if you want to change the port in the same file look for the line bindingInformation and it will show the ports defined to http and https.
Note: if this not works for you, you need make a rollback of the file web.config using the backup created before and restar the iis again.
Please let us know if its work for you.
Reference: