If Windows 7 and Vista won’t work “properly” with your SAMBA servers, give this a try:

  1. Create a new Group Policy Object in GPMC, and give it a name. I chose “Samba Compatibility”.
  2. Edit the GPO…
  3. Navigate to : Computer Configuration > Policies > Windows Settings > Security Settings > Local Policies > Security Options > Network Security
  4. Now edit the setting “Network security: LAN Manager Authentication level”, and change it to “Send LM & NTLM – use NTLMv2 session security if negotiated”.
  5. Apply that GPO to the appropriate OU, and you’re away* 🙂

* People will probably need to reboot for the changes to take effect.

Key symptoms we saw were Vista/Win7 rejecting the initial connection, prompting for a username and password, then rejecting the domain credentials you just entered. This fixes those issues!

Written by Phil Wiffen

Phil is an IT Professional working in Cambridge, England. He generally blogs about useful solutions that he comes across in his work/play.

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