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Xbox - Can't connect to DHCP issue

Posted on 9/16/19 at 4:11 pm
Posted by JustForThisThread
Member since Mar 2013
370 posts
Posted on 9/16/19 at 4:11 pm
So I just bought an Xbox One S (Digital Edition) for the first time ever so I can play the new Gears with a friend. From my searching it appears the "Can't connect to DHCP" is a fairly common problem for Xbox. Anyone ever have this similar issue and any ideas for quick/easy solution.

I was able to connect wirelessly but I want to connect via Ethernet. My setup is: I use a Power line adapter in a bedroom to receive the hardwire connection from the other end of the Powerline adapter that is hardwired into my router. Not sure if this is the problem or its soley stemming from Route/Modem.

I use this exact same setup for Internet to my PS4 and works just fine. All I want to do is unplug ethernet cable from PS4/Xbox to the other when in use.

I'm not very tech savvy and really don't know what DHCP is but my understanding is it has something to do with IP addresses. Is this something being caused by Modem or Router. Appreciate any help/replies.
This post was edited on 9/16/19 at 4:25 pm
Posted by TheChiznit
Sugar Hill, GA
Member since Feb 2010
2186 posts
Posted on 9/16/19 at 4:46 pm to
Unplug the router for a few minutes and plug it back in. DHCP will provide new internal IPs...maybe. Also powerline adapters can sometimes need to resynch. Unplug both powerline adapters and plug them back in. The lights should flash all green, etc.
Posted by BaddestAndvari
That Overweight Racist State
Member since Mar 2011
18586 posts
Posted on 9/16/19 at 9:07 pm to
quote:

Unplug the router for a few minutes and plug it back in. DHCP will provide new internal IPs...maybe. Also powerline adapters can sometimes need to resynch. Unplug both powerline adapters and plug them back in. The lights should flash all green, etc.


If this doesn't work, can you set a static IP on Xbox? I would hope so, since this has been a thing throughout the history of Windows...
Posted by Bard
Definitely NOT an admin
Member since Oct 2008
55821 posts
Posted on 9/17/19 at 7:30 am to
quote:

If this doesn't work, can you set a static IP on Xbox? I would hope so, since this has been a thing throughout the history of Windows...



If that doesn't work, try plugging something else in there (and/or try plugging in the XBox at another location) to make sure the problem isn't the cable/drop/run etc.

If plugging in an IP works, be sure to use something a bit high (like a .30 or higher) to make sure none of your DHCP devices are automatically assigned that IP when your XBox is off.
Posted by JustForThisThread
Member since Mar 2013
370 posts
Posted on 9/17/19 at 8:43 am to
quote:

Unplug the router for a few minutes and plug it back in. DHCP will provide new internal IPs...maybe. Also powerline adapters can sometimes need to resynch. Unplug both powerline adapters and plug them back in. The lights should flash all green, etc.


I just unplugged everything (power line adapters/modem/router) and after starting them all backup it worked. Thanks.

And no, no idea what a static IP address is.

Posted by Bard
Definitely NOT an admin
Member since Oct 2008
55821 posts
Posted on 9/17/19 at 9:52 am to
quote:

And no, no idea what a static IP address is.


Prepare for more info than you probably wanted because I love teaching this stuff and today I have extra time due to doing some computer re-imaging currently on my plate at work.

The internet is really just a big network made up of shitloads of smaller networks. Think of a network as a neighborhood with each device (computer, gaming console, phone, etc) on it being its own building. Each of those devices need a street address, that street address is known as an IP (Internet Protocol) address.

At the entrance to the neighborhood (which is also the exit) is a router. This thing actually has TWO addresses: one it is given by your ISP (Cox, ATT, etc), which is called an "external IP" and one that the devices within your network see (an "internal IP").

Your router is responsible for assigning addresses to everything within your network and this is done in one of two ways:

1. You can let it auto-assign addresses (pulled from a specific range of addresses that is referred to as the "IP pool"). This is known as DHCP (Dynamic Control Host Protocol) and it gives a dynamic (ie: it can change) IP address

2. You go in the specific device's settings (in your case it would have been your XBox) and set the IP manually (basically telling the router "No, screw you, THIS is my address, bitch!"). This is a static (ie: does not change) IP address

(you can set up rules where the router does #2 but I'm pretty sure I've already gone deeper into this than you were wanting lol!)

So what does all this look like in an actual setting?


You get Cox to run cable internet to your house. They give you a router (whether wifi, wired or both is irrelevant for this level of the conversation). You go to IP Chicken and see your IP is 174.73.175.142 (just an example). That is your external IP (it's dynamic but it won't change all that often).

You have your phone, computer and XBox all connected to it. The outside world sees all of those devices as all being at the 174.7.175.142 IP. Internally though your router is set as 192.168.0.1 and it has assigned your phone as 192.168.0.2, the computer as 192.168.0.3 and the XBox as 192.168.0.4.

Now let's say you set a static IP in the XBox for 192.168.0.4 but the XBox is turned off when you add your smartTV to the mix. The router may well hand it 192.168.0.4 since it sees that IP as unused because the XBox is off. That's going to make the XBox unable to connect when it turns on (which goes back to my point of why you assign a high number if you are putting in a static IP).


The only way having a dynamic IP or having a static IP is better than having the other is why you want it in the first place (network security, ease of use, etc).


If any of this was less clear than mud or you have any questions, let me know.
Posted by BaddestAndvari
That Overweight Racist State
Member since Mar 2011
18586 posts
Posted on 9/17/19 at 11:45 am to
I've setup 4 scopes for 4 different vlans this week... So it was on my mind. I also just added more info to confuse the OP a little more
Posted by brucevilanch
Fort Worth, Tejas
Member since May 2011
24392 posts
Posted on 9/17/19 at 11:50 am to
Have you tried unplugging it and then plugging it back in?
Posted by JustForThisThread
Member since Mar 2013
370 posts
Posted on 9/17/19 at 11:56 am to
LOL Thank you for explaining like I'm a 2nd grader but that is actually very helpful and I learned something today.

Yes, I knew the Ethernet port/cable worked bc like I said I use the exact same setup for my PS4 and never had a problem. I just stacked the Xbox on top the PS4 and plugged the ethernet into the Xbox.

So more than likely my Xbox was assigned the same IP address as something else?

One more question, so every time I come home and my Phone connects to Wifi it is assigned an IP address?
Posted by Bard
Definitely NOT an admin
Member since Oct 2008
55821 posts
Posted on 9/17/19 at 12:54 pm to
quote:

So more than likely my Xbox was assigned the same IP address as something else?


Unlikely but possible. If the DHCP issue is common among XBones then it's more likely to be something with the XBone software. Now that it's connected make sure it does an update.

quote:

One more question, so every time I come home and my Phone connects to Wifi it is assigned an IP address?


Possibly. Without getting too deeply into the weeds, DHCP leases an address out to a device for a specified amount of time (most home routers' are set at a 24 hour lease). If your phone is off the network for longer than that time period it could indeed get a different internal IP the next time it reconnects to it (especially if you've added or removed items from the network since the last time the phone was connected). If it's within the timeframe then the DHCP software will try to assign it the last IP it had when it was last on the network (as long as that IP is still available).


quote:

LOL Thank you for explaining like I'm a 2nd grader but that is actually very helpful and I learned something today.


My pleasure. It can get pretty deep pretty quickly so when someone says they don't understand something like a static IP I try to explain it in a way that would make sense to me if I didn't understand anything about IP's at all.
This post was edited on 9/17/19 at 12:58 pm
Posted by JustForThisThread
Member since Mar 2013
370 posts
Posted on 9/18/19 at 9:10 am to
Don't think it has updated but no issues so far.
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