Hi, I have recently installed Windows 7 Professional and everything works fine, except for when i try to play LAN games, I cannot detect or connect to anyone else's game, yet people can connect to ones i host. I have tried many different games, with the Firewall turned off, on different networks also.

what i would look at are: firewall (firewall.cpl and secpol.mmc)-check inbound and outbound rules network settings in Network and sharing centre (public or work can prevent you from connecting out) router firewall

Firewall Disabled, still doesn't work when I use a router or not, have tried using a proper network with a router and using peet-to-peer and still nothing, so that isn't an issue. I also ususaly set networks to "Home" not public or work.

Hi, You may also temporarily uninstall the antivirus program to test the issue. Does it work? Regards, Arthur Li - MSFT

Didn't have one installed at the time, so that isnt an issue.

Hi, I assume that there are three computers, Computer A is your computer and others are Computer B and Computer C. I would like to confirm that can Computer B and Computer C detect and connect to each other? You may also try to enable NetBIOS on the TCP/IP to check the result. 1. Click "Start", input "NCPA.CPL" (without quotation marks) and press Enter. 2. Right click on the connection that you use for the local connection, and then click "Properties". 3. Click to select "Internet Protocol (TCP/IP)", and then click "Properties". 4. Click "Advanced", on the "WINS" tab, click to select "Enable NetBIOS over TCP/IP", and then click "OK" to save the setting. In addition, you need to enable “Client for Microsoft Networks” and make sure the following services are started: Workstation Network Store Interface Service Server Remote Procedure Call (RPC) Function Discovery Provider Host Function Discovery Resource Publication Regard, Arthur Li - MSFT

In the situation where i do have more then 2 computers, yes they can all communicate fully aside from my own. trying your solution and ill post back if it works or not.

@Arthur_Li I have tried what you posted and that still does not work. I still do not have a solution to my issue, I am unsure if this helps but the computer i am using is a Dell Inspiron 9400