Problem with Vista and Western Digital NetCenter NAS

The default local security policy on Windows Vista is set to use NTLM v2 only.  After some off and on troubleshooting I finally discovered this was preventing me from accessing my Western Digital NetCenter NAS.  The following procedure changes the policy to allow older Lan Manager Protocols if needed: [more]

  • Run MMC snap-in secpol.msc
  • Expand Local Policies -> Security Options
  • Find Network security: LAN Manager authentication level
  • Double click and change to “Send LM and NTLM – use NTLMv2 session security if negotiated”

Networking Vista NAS