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Fix a device that will not get IP

We'll confirm the device is set to DHCP, check for conflicts and pool space, then restart the device and router—or reserve an IP when the pool is exhausted.

Troubleshooting · Home maintenance
10–25 min
What you'll need
  • Router (and admin login)
  • Device that will not get an IP
Step 1 of 7

Quick triage — pick your path

Quick triage — pick your path

Choose the option that matches what you see. You can jump straight to that section.

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Steps

Goal: Confirm the device is set to DHCP, check for conflicts and pool space, then restart the device and router.

  • On the device, open network settings. Confirm the adapter is set to obtain IP automatically (DHCP). A static IP may conflict.
  • Restart the device and the router. The device will request an IP when both are back up.
  • Good: Device gets an IP. Bad: Still no IP—check the router DHCP pool for available addresses.

Device config

Goal: Confirm the device is set to obtain an IP automatically.

  • On the device, open Wi‑Fi or Ethernet settings. Find the IP configuration.
  • Set to obtain IP automatically (DHCP), not static. If the device has a static IP, ensure it is unique and in the correct range (e.g. 192.168.1.x).
  • Good: Device set to DHCP. Bad: Static IP that conflicts—change to DHCP or fix the static.

Router and pool

Goal: Confirm the router has available IPs and the device can get one.

  • Log into the router. Open DHCP or LAN settings. Check the DHCP pool range and how many devices are connected.
  • If the pool is full, expand the range or clear old leases. Set a DHCP reservation for the device by MAC address if needed.
  • Try a different Ethernet port or forget and reconnect on Wi‑Fi.
  • Good: Pool has space, device gets IP. Bad: Pool full—expand or reserve an IP.

When to get help

If the device still will not get an IP after checking DHCP, restarting, and trying a different port, contact the router or device manufacturer. Have ready: router model, device type, DHCP settings, and what you tried.

Verification

  • The device receives an IP address (check in device network settings or router client list).
  • The device has network and internet access (e.g. opens a website).
  • No “limited connectivity” or “no internet” errors on the device.

Escalation ladder

Work from the device outward. Stop when the problem is fixed.

  1. Set device to DHCP Confirm the device obtains IP automatically.
  2. Restart device and router Power-cycle both to clear stuck DHCP state.
  3. Check DHCP pool Confirm the router has available addresses.
  4. Try different port or reserve IP Use another port or set a DHCP reservation.
  5. Call support Router or device manufacturer with model and steps tried.

What to capture if you need help

Before calling support or posting for help, have these ready. It speeds everything up.

  • Router model
  • Device type and network adapter
  • DHCP settings (device and router)
  • Steps already tried

Is the device set to obtain IP automatically (DHCP)?

A static IP can conflict or be wrong for the network.

On the device, open network settings. Check Wi‑Fi or Ethernet adapter. Good: set to DHCP (obtain IP automatically). Bad: static IP—set to DHCP or fix the static if it conflicts.

Yes No

You can change your answer later.

Set device to DHCP

Change the network adapter to obtain IP automatically (DHCP). Save. Restart the device. Retest.

Done

Restart device and router

Power-cycle the device, then the router (30 seconds). When both are back up, the device will request an IP. Good: device gets IP. Bad: still no IP—check DHCP pool on router.

Yes No

You can change your answer later.

Device has IP

The device received an IP from the router. It has network access.

Done

Does the router DHCP pool have available addresses?

An exhausted pool blocks new devices.

Log into the router. Check DHCP or LAN settings. Good: DHCP pool has free addresses—try different port, reserve IP, or update device driver. Bad: pool full—expand the range or clear old leases.

Yes No (full)

You can change your answer later.

Expand pool or clear leases

Expand the DHCP pool range in the router or clear old leases. Restart the device. It should get an IP. If not, set a DHCP reservation for the device.

Done

Try different port or reserve IP

Try a different Ethernet port or forget and reconnect on Wi‑Fi. Set a DHCP reservation for the device by MAC address. Update the device network driver or OS. If the device still will not get an IP, call support.

Done

Reviewed by Blackbox Atlas

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