Renew Your IP Address
Once in a while I have trouble accessing the Internet. If I turn off my cable modem router, wait a few seconds, then turn it back on, the problem is resolved. But there must be a simpler way. What do you suggest?
Fix Internet Access Problems By Renewing Your IP Address
When you cannot access the Internet through your Ethernet or wireless connection, the problem may be that you have no IP address or an invalid one. Sometimes this is caused by a flaky router, but whatever the reason, you can often resolve the problem by renewing your IP address.
A sign that you need to renew your IP address is the message, "limited or no connectivity" from the network icon in your system tray. Click on that icon, select "status," and you may see that you are connected to the router at XX Mbps but have "no Internet access."
In Windows, renewing your IP address is simple and takes just a few seconds, if everything else is working as it should be. Here are step by step instructions to renew your IP address:
- Open a command prompt. Click Start and enter "cmd" in the Search window (Windows 7) or in the Run window (XP).
- Enter on the command line "ipconfig /release" to release/erase your current IP address. Note that there is a space between "ipconfig" and "/release".
- Enter "ipconfig /renew" to renew your IP address (don't forget the space). After a few seconds, a message should confirm that your IP address has been renewed.
- Enter "exit" to close the command line window.
Many people simply shut off their computer and router, wait a few minutes, and power up again. This procedure also renews your IP address, though not as quickly or easily as the command-line method.
Why Do I Need to Renew My IP Address?
Your IP address may have to be renewed for any of several reasons. The most common cause is a temporary failure of your router's DHCP server, which assigns IP addresses to network adapters as they log on. Often, DHCP server failures are very brief, and renewing your IP address will work immediately. But you may have to reset your router by turning it off and waiting a minute before powering it up again.
Another reason for DHCP failure may be that your network connection is not configured to use DHCP. To check DHCP configuration, open the Properties of your network connection, highlight the TCP/IP Protocol (v4 or v6, whichever you are using) and click Properties. Make sure "obtain an IP address automatically" is checked.
A loose cable may be the cause of an IP address failure on hardwired Ethernet connections. The message "Media disconnected" from ipconfig is a sign that your network adapter is not connected to the router. Make sure the connections between your network adapter and the router are secure. Rarely, the cable or even the network adapter may need to be replaced.
When a wireless network adapter has a "media disconnected" problem the cause may be a corrupted driver. Try uninstalling and re-installing the adapter through Device Manager. You may also want to look for an updated driver for that adapter.
Renewing your IP address will not fix all Internet connectivity issues. But it's something you can try before calling your ISP's support line, and often it works.
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This article was posted by Bob Rankin on 20 Jun 2011
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Article information: AskBobRankin -- Renew Your IP Address (Posted: 20 Jun 2011)
Copyright © 2005 - Bob Rankin - All Rights Reserved