With method # 1 from article, you can completely remove the "Server" variable, but this only applies to IIS version 10.0. If you are receiving the response as "Server: Microsoft-HTTPAPI/2.0" you can go to the Registry: "HKLM\SYSTEM\CurrentControlSet\Services\HTTP\Parameters" and add a DWORD "DisableServerHeader" and give it a value of "2". Other than these methods just mentioned, I do not know if you can completely remove it. You can always remove them by custom code though