Step by Step Directions for Techs

Browsing locally in lab environments

There is a problem with Windows 2008 / Windows 2008 R2 that comes up when you try to browse locally.  This seems to happen for me most frequently in lab environments.  For example, I recently put together a proof of concept for ADFS to service a web farm / web server.  When testing ADFS using hosts files and browsing to the ADFS site locally, I will get authentication errors.  The solution is to disable the loopback check.

To do that:

  1. Open Registry Editor
  2. Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa
  3. Right-click Lsa, point to New, and then select DWORD
  4. Type “DisableLoopbackCheck” as the key name and then press ENTER
  5. Open “DisableLoopbackCheck” key
  6. Type “1” as the value
  7. Click OK
  8. Quit Registry Editor
  9. Restart the server

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