LAN Network

To fix an error where your computer has an invalid IP address that starts with 169, you need to make it so that the networking device in your computer is able to communicate with your network hardware.

Know more: what is LAN?

Depending on the exact reason you experience this error, you may be able to accomplish this by resetting the network hardware, telling the networking device in the computer to request a new IP address, or changing some settings in the router.

Power cycle the network hardware. Turn off and unplug your modem and router, and then plug both devices back in. When the network hardware starts back up, and your computer attempts to reconnect to the network, it may be able to obtain a valid IP address.

Use the Windows networking troubleshooter. This automated process takes care of most networking problems, including ones that prevent a computer from obtaining a valid IP address.

Request a new IP address. This is a little more complicated because you need to open a command prompt and enter a series of commands. In most cases, this allows the computer to obtain a valid IP address.

Check the DHCP settings in the router. There are two ways that a router can assign IP addresses. Either the router dynamically assigns a unique IP address to each device, with no input from you, or you must assign a unique static IP address to each device manually.

DHCP is the setting that allows a router to assign IP addresses dynamically. If this setting is turned off, and you haven't set a static IP address for the computer, you won't be able to access the internet.

Disable the router. In some cases, you can fix this type of problem by disabling the networking device and then re-enabling it, or by uninstalling and reinstalling the driver. These are similar processes that both require you to access the Windows Device Manager.
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