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Luckily, you can read my post from Online Tech Tips on how to repair Winsock errors in Windows.However, that may not be the only reason why an ipconfig /renew would not work.So I decided to run the IPCONFIG /RENEW command to renew the computers’ IP address.
You can set your computer to obtain an IP address from a DHCP server automatically by going to Start, Control Panel, Network Connections.
In Windows 7 and Windows 10, you go to the Network and Sharing Center and click on the Change adapter settings link.
The IP address for the computer was 169.254.x.x and the subnet mask was 255.255.255.0.
The 169.254 address is an APIPA (Automatic Private IP Addressing) address that is assigned when no DHCP server is available or reachable.
Now try to renew your IP address and see if you can connect to the Internet or network.
If this does not work, you have to make sure there is not some kind of software on your computer that could be blocking all the ports on your computer.Right-click on the Local Area Connection or Ethernet and choose Properties.On the General tab, scroll down in the list box till you see Internet Protocol Version 4 (TCP/IPv4) and highlight it. Now make sure that both Obtain an IP address automatically and Obtain DNS server address automatically are selected.The quick answer here is that the DHCP server itself needs to know its own IP address before it can start serving requests.Other possibilities are network routers, and central authentication servers (a Domain Controller in the Active Directory world of Windows, or an LDAP server in the UNIX/Linux world).(This is defined in RFC 2131 and extended in at least RFC 2132.) A device can also self-configure its address and avoid the need for DHCP.The Finally, you asked why a server should want to self-configure.If it is, then someone may have manually set your IP address.This means that even if there is a DHCP server on the network, it won’t get a new IP address.It could be with the drivers, so download the latest drivers and update them.You can also test out whether it is a problem with your network by connecting the computer to another device such as a cable modem or another router and seeing if it can connect to the Internet.