What you’re seeing
- Windows displays a warning that another device on the network is using this computer's IP address.
- A computer, printer or phone repeatedly drops off the network and then reconnects.
- Printing works sometimes, but jobs often go to the wrong device or fail.
- Remote connections or file shares to a particular machine drop at random.
- The problem began after a new printer, camera or access point was installed.
Common causes
Every environment is different, but these are the causes our engineers find most often:
- A device was given a static IP address that falls inside the DHCP range.
- Two DHCP servers, such as a router and a Windows server, are both handing out addresses on the same network.
- A device was moved from another site or reset to factory settings with a hard-coded address.
- A reservation was created for one device but the address was already leased to another.
- A virtual machine was cloned with the same static network settings as the original.
Why it matters
IP conflicts cause the frustrating kind of problem that comes and goes. A shared printer, phone system or server that keeps disappearing interrupts everyone who depends on it, and staff waste time retrying, restarting and calling for help. If the conflicting device is a server or firewall, the effect can spread to the whole office. Conflicts also point to a lack of documentation about which addresses are in use, which makes future changes riskier.
How AskTechGurus fixes it
Skip the trial and error. A certified engineer works on your actual system, finds the root cause, and fixes it properly.
Tell us what’s happening
Submit a ticket in about two minutes. Paste the error, describe what changed, and pick your tier. No charge to submit.
A certified engineer diagnoses it
A vetted, US-based systems engineer claims your ticket, usually within minutes during business hours, and investigates over a secure remote session you can watch and end at any time.
Fixed and verified with you
The engineer resolves the root cause and confirms with you that it’s working. You don’t just get a workaround, and you get a plain-English summary of what was wrong.
Pay only when it’s resolved
Fixed price from $99, invoiced only after you approve the fix. If it isn’t resolved, you don’t pay.
Frequently asked questions
How do you find which device is causing it?
Network equipment and DHCP records usually reveal both devices using the address. An engineer can trace them remotely in most cases.
Could someone be doing this on purpose?
It is rare, but address spoofing is an attack technique. If the conflicting device can't be identified, we look into it further.