There are several main reasons why a computer can be isolated from the rest of the network. Usually the problem lies in the wrong settings for the firewall and similar programs.
Instructions
Step 1
If your network is built using a router, then first check the parameters of this equipment. Open the web interface of the network device by entering its IP address into the browser. Check your firewall settings. If you use MAC address verification to access the router, enter the MAC of your computer into the sparse devices table.
Step 2
Open the Start menu and go to Run. Enter the cmd command in the field that opens and press the Enter key. Type the ipconfig / all command in the menu that appears and write down the MAC address of the required network card. Enter its value in the above table.
Step 3
Clear the Routing Table or Route Table menu items that are associated with this computer. Make sure NAT is enabled for this PC. Save your router settings.
Step 4
Now check the settings of the computer itself. First, be sure to disable third-party programs that monitor network traffic. It can be the Outpost Firewall utility or its analogues. Now turn off the Windows Firewall service. As practice shows, it is very difficult to set it up on your own, and the effect of its work is too little.
Step 5
Open the start menu and go to the control panel. Find and open the "Administration" item, which is located in the "System and Security" menu. Open the "Services" item. Find the Windows Firewall service, right-click on it and select Stop. Now open its properties and set the Startup type to Disabled.
Step 6
Check the parameters of the network adapter. Make sure the specified IP address is in a valid zone. Try changing its value to the address of one of the network computers, after turning off the second PC. Restart your computer and try again to access network resources.
