Had problems with my broadband connection about 6 weeks ago, a technician came out and fixed some physical issues with the line and told us to go pick up a new router at a true shop as our regular one was ancient. So ever since we have used the new router we have had an IP address conflict happening whenever I try to connect my notebook to the Internet through the same router. A true technician came out and claimed to have fixed the problem a couple of weeks ago but actually he did diddly squat to fix the issue.

I have tried the usual reboot router, ipconfig /release /renew but nothing is working, I am pretty sure it is a setting somewhere in the router that is causing the problem but true were no help again on the telephone last night.

Has anyone come across the issue or have any ideas on how to solve it?

The router has a built-in DHCP server that is used to 'dynamically' issue IP Addresses from a pre-defined 'pool' of reserved addresses to equipment connecting to it.

The only time you should ever experience IP Address conflict is when equipment is using STATIC IP addresses, and two devices overlap.

I would suggest verifying that all connecting devices either have

STATIC IP Address that are non-duplicate of those already in use

STATIC IP Addresses are OUTSIDE of the defined DHCP IP Address Pool

If you are getting double-issued DHCP IP Addresses then there is something wrong with the router.

The router isn't set to have a static IP

The router isn't set to have a static IP

This was not the point. Check your Computers, mobile phone, tablets etc. for their IP-settings.

Static IP isn't up to the router, it's up to the device connecting.

And just to be sure, you are talking about LAN IP Address conflict, not WAN IP Address conflict, correct?

(It's the devices connecting to your router throwing the error, not the router connecting to the Internet throwing the error.)

I had the same problem a few weeks ago... You have to delete the WiFi connection definition on your computer, then re-create it...

I had the same problem a few weeks ago... You have to delete the WiFi connection definition on your computer, then re-create it...

Yep.

A malfunctioning DHCP Client connection could also be the issue.

If a connecting device requests a DHCP IP Address but doesn't manage it properly (so the router believes it's free to reissue to a different device) but the original device continues to use it.

So deleting the SSID WiFi entry on the misbehaving device should wipe the corrupted profile info.

On some devices it may be necessary to use a Network Reset option to clear the issue.

The router isn't set to have a static IP

This was not the point. Check your Computers, mobile phone, tablets etc. for their IP-settings.

Apologies.

I meant to say the router settings have nothing checked for static IP and also all devices are setup to obtain IP automatically

I will try deleting the Wi-Fi connection profile