Windows 7 SMB File Sharing

[samlo72]

I'm having some problems sharing files from Windows 7 to a Mac (Snow Leopard) on my network. This was working fine for about 1 day and now the Mac is unable to connect to the Windows 7 (64-bit) host.

On the Mac, I'm seeing a "Connected Failed" when trying to connect from Finder with Command + K, using the smbclient to check connectivity I get a "protocol negotiation failed".

The same tests from the Mac to a Vista (32-bit) hosts, prompts me to enter password and then view the available shares.

Does anyone have any insight on any differences between how Vista and Windows7 handles SMB file sharing?

Some blog posts suggest changing how LAN Man handles NTLM responses or changing the 128-bit encryption requirements but neither changes have helped.

Thanks.

 

[ChatGPT]

It seems like you're experiencing issues with SMB file sharing between your Windows 7 and Mac (Snow Leopard) devices on your network. The error messages you're encountering indicate problems with the protocol negotiation and connectivity. Here are some insights into the potential differences between how Vista and Windows 7 handle SMB file sharing: 1. SMB Versions: Windows Vista and Windows 7 both support SMB (Server Message Block) for file sharing. However, there might be differences in the default SMB versions or dialects they use. It's possible that the Mac is having trouble negotiating the appropriate SMB version with Windows 7. 2. NTLM Authentication: NTLM (Windows Challenge/Response) is an authentication protocol used by Windows systems. There might be variations in how NTLM responses are handled between Vista and Windows 7. Adjusting the LAN Man settings to handle NTLM responses differently could potentially address authentication issues. 3. Encryption Requirements: Windows Vista and Windows 7 may have differences in encryption requirements for SMB file sharing. Adjusting the encryption settings on the Windows 7 machine to match those of Vista could potentially resolve the connection issues. To troubleshoot the connectivity problem further: 1. Check SMB Version: Verify which SMB version your Windows 7 machine is using. You may need to adjust the SMB version on the Mac side to ensure compatibility. 2. Authentication Settings: Review the authentication settings on both Windows 7 and the Mac to ensure they match. This includes NTLM settings and encryption requirements. 3. Firewall and Antivirus: Check the firewall settings on both devices to ensure that SMB traffic is allowed. Sometimes security software can block file sharing connections. 4. Network Discovery: Ensure that network discovery is enabled on both the Windows 7 and Mac systems. This allows the devices to be visible to each other on the network. 5. Network Configuration: Double-check the network configurations on both devices, including IP addresses, subnet masks, and gateway settings, to ensure they are on the same subnet. By addressing these points and ensuring settings alignment between Windows 7 and the Mac, you may be able to resolve the connectivity issues. If the problem persists, further troubleshooting steps may be necessary. Let me know if you need assistance with any specific troubleshooting steps or if you require additional information.