Windows 7 Accessing CIFS Share

Some old notes I am posting on Windows 7 tweak.

Windows 7

1. Click Start, search for “gpedit.msc” (Start – Run in Windows XP and earlier). This will launch the Local Group Policy Editor.

2. In the leftpane, navigate to “Local Computer Policy – Computer Configuration – Windows Settings – Security Settings – Local Policies – Security Options“.
lan-manager-authentication-level

3. In the rightpane look for “Network Security: LAN Manager authentication level” and you should be able to see the set level. On a default install, it should be “not defined”. Change this to match or be compatible with the Non-Windows 7 PCs on the network. To change, double-click the entry and choose from one of the listed options. Click Apply and OK.

The defaults of are

Windows 2000/XP: send LM & NTLM responses

Windows Server 2003: Send NTLM response only

Windows Vista/Server 2008 (& 2008R2)/7: Send NTLMv2 response only

Send NTLMv2 session security if negotiated

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