After Action Center Installation, Error "HTTP Error 400. The Request Hostname Is Invalid" Thrown When Trying To Access It

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Post installing Action Center 20.10, error "HTTP Error 400. The request hostname is invalid" is getting thrown when trying to access it.

An Unknown Error Has Occurred. (#200) when trying to access Action Center after fresh install.

  1. Verify the values set for the URL when doing the installation are correct.
  2. Verify the binding in IIS is the correct one, if it is different it will not be able to reach the Action Center Website.