How To - Connect Windows 7 to Mac OS X Server

Paul Vargas -

Contrary to this Apple KB article, Windows 7 can be connected to a PDC Domain running on Mac OS X Server. We have successfully connected Windows 7 machines to both a PDC and an Open Directory Master running on Mac OS X Server 10.6 Snow Leopard using the solution below (originally found at MacWindows.)

SUMMARY: tell Windows 7 to NOT encrypt communications to and from the server.

From Windows 7:

  1. Type Secpol.msc in start button.
  2. Expand "Local Policies" and select "Security Options."
  3. Alternate : Type secpol.msc to get editor up then
  4. Locate "Network Security: LAN Manager Authentication Level" in the list and double-click it.
  5. Change the setting from "Send NTMLv2 response only" to "Send LM & NTLM -use NTLMv2 session if negotiated" Apply & OK.
  6. Then locate "Network Security: Minimum session security for NTLM SSP Based (including secure RPC) Clients."
  7. Change the setting from "require 128 bit" to unchecked (No Minimum).
  8. Click Apply and OK.
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  • 0
    Ben Greiner


    We've received feedback from a reliable Apple source that says BINDING (or Joining) Windows 7 clients to Mac OS X Server 10.6 Snow Leopard can have long-term side-effects (i.e. problems with changing the network password) so beware and let us know what you discover!

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