Windows 7 end users cannot authenticate with NTLM

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