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Error 401, Loopback Check

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Article ID: 172793

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Updated On:

Products

Information Centric Security

Issue/Introduction

What do I do when I get a 401 error when using FQDN instead of localhost or hostname?

Resolution

  1. Open the registry
  2. Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa
  3. Add a DWORD named DisableLoopBackCheck and set the value to 1.
  4. Restart the machine