Static IP address setup isn't working

Symptoms

• Device with a manually set IP address can't reach the internet
• Device can reach some things (like the router) but not websites
• Other devices lose connectivity after one device is set to a static IP
• Static IP works temporarily then stops

Likely causes

• CommonStatic IP falls within the router's automatic DHCP rangeIf the router later assigns that same address to another device automatically, a conflict occurs.
• CommonIncorrect subnet mask or default gateway enteredThese must exactly match your router's network settings for the device to communicate properly.
• CommonDNS servers not set when configuring a static IPA static IP doesn't automatically include DNS settings; without them, websites won't resolve even though the network connection itself works.
• PossibleIP address outside the router's actual local network rangeEvery device must be in the same subnet range as the router to communicate.

What to do

1. Check the router's DHCP settings to find its automatic address range, then pick a static IP outside that range but within the same subnet (e.g., if DHCP uses .100-.200, pick something like .50).
2. Confirm the router's own IP address (the default gateway) and enter that exact address in the device's gateway field.
3. Use the same subnet mask as the router, usually 255.255.255.0 for home networks.
4. Manually enter DNS server addresses, either the router's IP address or a public DNS like 8.8.8.8 and 8.8.4.4.
5. Save the settings and restart the network adapter or the device.
6. Test by pinging the router's IP address first, then trying to load a website, to isolate whether the local network or DNS/internet is the failure point.
7. If problems continue, consider using a DHCP reservation in the router instead of a manual static IP, which achieves a fixed address without the setup risk.

Tools and parts

• Computer with network settings access

When to call a pro

A DHCP reservation set from the router's admin page is usually simpler and safer than a manual static IP; an IT professional can set this up if needed.

Safety