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This article describes how to disable the LoopbackCheck of the Windows server. This is necessary whenever the Web Portal and the Gateway Role or Intranet Role are installed on the same server and the connection from the Gateway Role to the Web Portal is to be established using the FQDN.

To do this, proceed as follows:

  1. Click Start, click Run, type regedit, then click OK.
  2. Click the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa
  3. Right-click Lsa, point to New, and then click the DWORD value.
  4. Type DisableLoopbackCheck, and then press [ENTER].
  5. Right-click DisableLoopbackCheck. Then click Change.
  6. In the Value box, type 1, and then click OK.
  7. Exit Registry Editor.
  8. Restart your computer for the change to take effect.

Alternatively, you can share individual host headers. You can find instructions here: