Can't connect to Home Network with Windows 7

[carebear12]

Hi,

I'm totally new to Windows 7, I've read through a lot of the threads here but can't fix the problem.

I have a network of two vista Pc's connected to a router, no problems. But I can't get my new windows 7 laptop to join the network. The laptop connects to the router and internet fine, but can't see either PC. The PC can see the laptop sometimes, but can't access it - when I click to open get a 0x80070035 error. And once I change a combination of settings the PC can't see it anymore.

I have also tried connecting just to the router, turning off firewalls but that doesn't work either. File sharing is on, on all computers.

Unsure what to try next?

 

[kegobeer]

I'm guessing you have a workgroup established. Are all three machines on the same workgroup? On the Windows 7 computer, did you join a homegroup? If so, leave the homegroup - homegroups are only for Windows 7 computers and will not work with any Vista computers.

 

[carebear12]

Yes all on the same workgroup and no homegroup.

 

[kegobeer]

Did you configure a home network for Windows 7, or is it a public/work network?

 

[carebear12]

Home network.

 

[Oxalagu]

By default Windows XP uses NTLM authorization for logging in to workgroups. Windows 7 defaults to LM auth. To connect from Windows 7:

Control Panel -> Administrative Tools -> Local Security Policy -> Local Policies -> Security Options

* Network security: LAN Manager authentication level
- Send LM&NTLM response

* Minimum session security for NTLM SSP
- Disable Require 128-bit encryption