Apply Fail "There was no endpoint listening at https://URL that could accept the message" (4210053)

During the configuration of "Use Admin Pool accounts", you see the following error:

There was no endpoint listening at https://MyServer/MyVirtualDir/MyService.svc that could accept the message. This is often caused by an incorrect address or SOAP action. See InnerException, if present, for more details.

Unable to connect to remote server

A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host failed to respond

111.11.111.11:443