O'Rourke

Been trying to network my Desktop Mac and my T61 Vista machine with no success. The Vista machine can see the Mac, but I can't log in. Finally found out Vista is set to ingnore the security handshake OS X is sending. Not sure if OS X (I'm running 10.4) needs a security update, or if Microsoft is just being finicky, but it sure was a pain trying to get it working.

Here's the fix:

1. Click the Start Orb, type gpedit.msc into the Start Search field, and press Enter

Click the Continue button on the User Account Control prompt.
This will launch the Group Policy Object Editor for the Local Computer Policy.

2. In the Group Policy Object Editor, expand:

-> Computer Configuration

-> Windows Settings

-> Security Settings

-> Local Policies

-> Security Options

3.

Open the 'Network security: LAN Manager authentication level' policy and change the Security Setting to:

Send LM & NTLM - use NTLMv2 session security if negotiated

4. Click the OK button to save changes, and then close the Group Policy Object Editor.