Windows 8 Access network share outside of domain?

I have a new install of Windows 8 Home and am trying to log in to a network share. The problem is that it is trying to force me to log in with PCname\username and the share is expecting only uname. If I click on the change username button it is still forcing me to use PCname\username and wont let me change it.

I had the same problem with a Windows 7 Professional box and found this solution: Windows File Share From Outside the Domain

1. Start – Control Panel – System and Security – Administrative Tools – Local Security Policy
2. In the left pane, Local Policies – Security Options
3. In the right pane, double click “Network security: LAN Manager authentication level”
4. Select “Send LM&NTLM – use NTLMv2 session security if negotiated”
5. Apply – OK

But there’s no local security policy on the windows 8 box, I was thinking maybe because it’s Home and the Win 7 is professional?
Does anyone have a workaround so I can access the network share on my win 8 box?

Thanks!