This means the computer is set to use a manual IP address instead of getting one automatically. Switching the adapter back to automatic settings fixes it — unless that computer is supposed to have a fixed address, in which case the manual settings need to be corrected.
Common causes
Static IP set on the adapter
Someone set a manual address, often to fix an earlier problem or for a printer or server setup.
Settings from a previous network
A laptop configured for another office or home network keeps those manual settings everywhere.
Software changed network settings
VPN clients and some networking tools can change adapter settings and fail to restore them.
The DHCP Client service is stopped
If the Windows DHCP Client service isn't running, the computer can't request an address.
How to fix it, step by step
- 1
Open the adapter's IPv4 settings
Go to Network Connections, right-click the adapter, choose Properties, then Internet Protocol Version 4 (TCP/IPv4).
- 2
Select automatic settings
Choose "Obtain an IP address automatically" and "Obtain DNS server address automatically", then OK.
- 3
Check the DHCP Client service
In Services, make sure DHCP Client is running and set to Automatic.
- 4
Renew the address
Run ipconfig /renew and confirm the computer receives an address from your router's range.
When to call a technician
Before switching to automatic, check whether the device needs a fixed address — servers, printers, and some business systems do. If you're not sure, call us. We set up DHCP reservations so devices keep the same address without manual settings that break when the network changes.
On-site support across Orange County · see our business networking and WiFi installation services.
Frequently asked questions
Should office computers use DHCP?
Yes, almost always. Computers should get addresses automatically. Printers and servers should keep fixed addresses through router reservations.
What's the difference between static IP and DHCP?
With DHCP the router assigns an address automatically. With a static IP the address is typed in manually and doesn't change unless someone edits it.
Will enabling DHCP break anything?
Not on a normal computer. On a server or printer that other devices connect to by address, it can, so check first.