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LevelBlue Knowledge Base

Home » Knowledgebase » Legacy Products » Secure Web Gateway » ERRMSG: Windows 7 end users cannot authenticate with NTLM

ERRMSG: Windows 7 end users cannot authenticate with NTLM

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This article applies to:

  • SWG 10.x

Symptoms:

  • Client can connect with an XP workstation, but not with Windows 7
  • Using 2008 AD server
  • Client connections return a "STATUS_INVALID_PARAM" error code when you use a "Send NTLMv2 response only" authentication level in Windows Server
    2008 or in Windows Vista

Causes:

  • An issue in AD server

Resolution:

MS Solution to implement on the AD server is in:

http://support.microsoft.com/kb/957441 

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