Another device on network is using your computer
I have been getting this message since installing Yosemite. All I have done to correct is reset my Airport extreme. We have 2 iPhones, an iPad, and aMacBook Pro. I presume I have to change the IP address on my Desktop computer (iMac). I haven 't a clue how to do or what to change the address to.
Thanks for any help you can lend.
Happy to help.
I too am puzzled that both Apple and AT&T were apparently unaware that you had a modem, not a gateway.
If you had a gateway (which is a combination modem/router on one chassis with 3-4 ethernet ports), and you were configuring your AirPort Extreme to work with that device, then in that case, the correct setting would have been "bridge mode".
+Are there any downsides to sharing a public IP address?+
This is the correct setting for the AirPort Extreme when it is connected to a simple modem (one ethernet port). Since your modem only delivers one IP address, you must have the AirPort Extreme configured to "share that IP address" in order to have the device furnish separate IP addresses to each of your devices on the network.
With the AirPort Extreme in bridge mode, it was passing through the single IP address from the modem and only one device on your network was receiving that IP address. That's why you saw conflicts about another device using the same address.
Sounds like you are all set. This should work very well for you.
Similar Messages
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Can someone tell me why, since upgrading to Yosemite, I keep getting a message window saying "Another device on the network is using your computer's IP address?"
That may be what is a fairly common problem of 2 devices mistakenly assigned the same address. Try shutting off all of the devices connected to your router, reboot the router and then the devices connected to it.
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WIFI issue: error Another device on the network is using your computer's IP address
Since installing Yosemite I am kicked out of the network on a regular basis. Originally this only happened when on Skype which is bloody annoying but now it happens all the time. Each time I receive the error message:
Another device on the network is using your computer’s IP address
Is there anything I can to to fix this. For example I cannot find which other device is doing this.
regards
PPIf it on DHCP its a bit odd that you get that message(that your router rejecting giving you the IP its giving you kind of thing or your mac seeing another machine( a ghost)-which would be consistent(after all it nearly that time of year) There is a long thread on here with several wifi resolve solutions including the SMC reset(which people had to do for Mavericks so its not really something new. A lot of people seems to have been able to reset things and get a stable wifi and everything settles down for them.
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Airport Express: error code another device on the network is using your computer's IP address
I have set up the airport express now I get an error reading 'another device on the network is using your computer’s IP address 192.168.1.64. ' and I am unable to access the internet. Any suggestions?
The modem is fine, it's just not designed to work with a router without some re-configuration.
Connect the modem directly to your computer using an Ethernet cable
Pull up your browser and enter 192.168.1.254 into the address bar and press enter. That should pull up the modem configuration pages
Look for an Advanced tab on the left. You may need to enter the modem access code when you do this. It is on the bottom of the modem
Click the PPP Location Tab
Change this setting to "PPP is on the computer (or router)..... or, if you do not see this setting, there should be a setting for Bridge Mode.
Make your selection and click Save or similar and modem will restart with the new settings
Important....if you need to get back to the original modem settings again, you will need to first hold the reset button in on the back of the modem for 10 seconds, then let it restart. That will get it back to original factory settings if you need to get back to those settings.
With the AirPort Express powered up, hold in the reset button on the device for 10-12 seccnds and then release the reset button. Allow 40-45 seconds for the Express to restart at which time it will slowly blink amber
Connect the Ethernet cable from the modem to the AirPort Express
Make sure you are logged onto the wireless signal for the AirPort Express. It provides a temporary network with a name like Apple Network xxxxxx. Log on to that network. There is no password.
Open AirPort Utility - Click Manual Setup
Click the Base Station tab/label located just under the row of icons to assign a name to the Express, a device password (write that down) and adjust Time Zone settings
Click the Wireless tab next to the Base Station tab
Wireless Mode = Create a wireless network
Wireless Network Name = Your choice
Check mark next to Allow network to be extended
Radio Mode = 802.11n 802.11b/g compatible
Channel = Automatic
Security = WPA2 Personal
Password = Your choice
Confirm Password
Click the Internet icon
Connect Using = PPPoE
User Name = probably your email address with your provider
Password = password with your provider
Verify Password
Service Name....Leave this completely blank
Connection = Always On
Disconnect if Idle = Never
Click Update at the lower right and allow 40-45 seconds to restart. You may see a message about "setup over WAN". Click to ignore.
As soon as you see the message in AirPort Utility that the settings have been stored...Close AirPort Utility.
Wait for a green light on the AirPort Express and then click the fan shaped AirPort icon at the top of the computer screen to look for the new network that you just named. Log on and enter the password.
You should have an Internet connection.
If not, power everything down. Start the modem first, then the Express, then your computers -
In the last two days I have received this message on my iMac: "Another device on the network is using your computer's IP address..." What should I do?
There are a lot of ways this can occur, but most common is from having devices setup and on a router for a long time and then adding devices and cycling the router. Devices that do not power cycle retain the old IP address. You can shutdown all devices, then power down the router, disconnect power so it is truly shut down, wait about five minutes then power up the router. Give it a couple minutes to capture a new IP address, then one-by-one power up the devices giving each a couple minutes to capture an address. That should then have all devices with unique addresses.
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"Another device on the Network is using your computer IP address" is plaguing me. What can I do to correct this? It seems to come on after it has been inactive for some time.
Hi Delores,
What Encrytion does your Router/Modem use?
This might mean your Mac is set to a Static/Manual IP instead of using DHCP to request an IP, or another device is starting up with a Static IP & kicking your Mac off the Router.
If this is Wifi/Airport with little or no encryption,it could be somebody outside causing it.
How many things are connecting there? -
Another device on the network is using your computer's IP
This problem has been occurring for a while now.
The Internet works on my iPad, iPod and even my parent's computers.
I am writing this from my iPad.
Any help will be great thanks.
(I can provide data if needed) :]Jarndyce wrote:
"Another device on the network is using your computer's IP address (10.0.1.198)."
Does anyone have any suggestions as to why I have begun to get this message?
That's an odd address for such a conflict. IP addresses are normally allocated from the low end of the range, so a value such as 10.0.1.3 would be more likely.
I believe the IP addresses for the network are allocated by the AEBS. Is this correct?
In general, yes. Is your computer configured to obtain its IP address via DHCP or is it declared statically?
You might try this: Launch AirPort Utility, enter "manual setup" mode for your AirPort unit, select the "Advanced" pane, then click on the "Logs and Statistics" button. In the resulting window select the "DHCP Clients" tab. If the offending computer is using DHCP, you should see it there. If it's only identified by MAC address, you'll have to do a little research to determine which device has that MAC address.
In which case, that would make sense, as my AEBS is acting oddly at the moment. It crashes and requires regular restarting - I've posted regarding this, but no suggestions so far.
Could the two issues be related?
I'm not sure. -
"Another device on the network is using your computer's IP" HELP!
I woke up this morning to an error message that read "Another device on the network is using your computer's IP address. I tried turning on and off airport to no avail. I also tried resetting my computer about 3 times. I Shut all my other devices off and its still not working.
PLEAASSE help.Yes,sure I have done this thousand times.....Mr witch..
See this please
I have done u know....After the renewing the DHCP lease,it happens like that
it said that SELF-Assigned IP and cannot use internet with wifi.......It didn't show Connected,just it show me that Self-assigned IP...what to do Mr.Witch -
I had a strange message on my Macbook Pro Desktop this morning saying"another Network is using your computer"? Help..
Thank you , this was the message and I will change the IP address, there seems to be someone in my apt. complex who is always on when I go to use my Iphone and I am not sure, but thought, maybe it was them?
Will connect again and did shut down computer and have not seen this again today...and have never seen this in the past 3 years of owning my Mac!
TY -
How do I resolve, "Another device on the network is using your computer's IP address?"
Another device on the network is using my computer's IP address
This error message can be seen under several different circumstances. I've seen it after rebooting my router or after an unintended reboot of my computer (like a force quit). If your devices are still able to access the Internet, ignore it. If one of them can't access the Internet then there's an issue with your network that requires resolving.
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Another device on the network is using your computer's IP address
I received this message when I turned my computer on this morning. What does it mean? What kind of device could it be, and what network is it talking about? Also, how does the other device get the IP address of my computer?
It is possible it could be your printer, if you have one.
If there is not another computer in your house, or an iOS device that you know of, it is possible you may have someone in your neighborhood piggybacking on your network use for their internet access.
This could more than likely mean that you are using an unsecured network. The Mac OS has a default firewall, but it applies to your iMac, not necessarily your network, especially if you have a modem and router (with wireless) combination setup.
You can check your network activity and see if some other user is indicated by going into Activity Monitor > Network and sort it by User to see if some unique user id is on your network.
Then you have to check your router to see if you have adequate security activated on it. You should be able to put in the ip address of your router in a web browser and connect to its admin pages (you should have information for its user name and password--if not, you can get that from the manufacturer's manual or website). -
Hwe continually get this message on our iMac even when other devices in the same room can access the network (laptop, iPad etc). We have tried using a fixed IP address and also an automatic IP selection but to no avail. Any suggestions,
What that means is you were forcing your Mac to always use the network address 123.456.7.89 since you had manually assigned that. Normally this would be fine, your router would check for active addresses in use and assign a different address to any computer or device trying to join the network. The problem could arise if your Mac is off-line and the router has already assigned the IP address to one of your other computers. When you tried to log in with your Mac you would get the conflict message that you have noticed.
Setting all computers to using DHCP will let the router handle the addressing.
I would check all of your computers and PC's. You may have more than one of your computers set to manually assign an address using that same IP address. Make sure you set all of them to DHCP only. Also, check if you have any other IP devices like a printer or NAS drive that is using static addressing. Those can cause the same issues.
It is prefered to use static addressing with those as it makes it easier to find them on the network and since they are pretty much always left on, the router knows they are there.
On your Mac go to System Preferences > Network > Advanced > TCP/IP:
What is shown should read:
Confugure IPv4
IPv4 Address
Subnet Mask
Router
Configure iPv4 using DHCP with manual address
Change that to "Using DHCP"
Apply the change and close the window.
I warn you, I've not yet received my first Mac and it's only an educated guess. I hope it helps. -
I have tried to turn off my modem and after that i turned on each machine individually it worked for a while giving my macbook pro and my Imac different IP address.. but the problem came back again and im here with 2 similar IP addresses on each machine and once that happen i lose the internet on both of them.. and I get an exclamation mark on my Airoport symbol.
how can i change my IP address and where can i get a new 1.. should i just make it up..??
TYsirioluce wrote:
I have tried to turn off my modem and after that i turned on each machine individually it worked for a while giving my macbook pro and my Imac different IP address.. but the problem came back again and im here with 2 similar IP addresses on each machine and once that happen i lose the internet on both of them.. and I get an exclamation mark on my Airoport symbol.
how can i change my IP address and where can i get a new 1.. should i just make it up..??
TY
What router are you using? -
Help resolving "another device on the network is using your computer" IP address (10.0.1.2)
I keep getting the following window pop up on my iMac. Can you help me get rid of it. It is a consistent problem
I keep getting the following window pop up on my iMac. Can you help me get rid of it. It is a consistent problem
Has the problem always been there, or has the problem arisen recently......maybe associated with the installation of Yosemite or a Yosemite update on your Mac?
If you open System Preferences (gear icon on the dock), then open Sharing, does the name of your Mac appear correctly? Or, do you see that a (2), (3), (4) etc has been added to the name of your Mac? -
But then there was still no Internet access even after I have disconnected all other home computers (a total of four including the Macbook and one iMac desktop. For simplicity, I shall categorically called them Mac hereafter unless otherwise specified. The Macs are operating on WiFi.).
The window message recommends changing the IP of either the Macs or the other device. The latter of course does not apply because I don't think the other device is one of my computers.
My questions:
(1) Why did that happen suddenly since the Mac and other computers on the WiFi was working fine in the morning (as well as days before) and then all of a sudden an unknown device is using my computer's IP? As far as I (we) can remember, we did not do any thing unusual this morning nor had we downloaded any special programs.
(2) How do I change the IP since it requires Internet acess to do it and since I can't access the Internet on the Mac?
(3) I am almost sure the problem is not caused by the Internet service because when I connected the Ethernet cable from the DSL modem to an old Windows PC, I got Internet via Internet Explorer. [I am actually sending out this message via IE on my PC.] However, when I cennected the Ethernet line from the modem to a WiFi router (Airport Extreme) and then connect the router and the old PC, I did not get Internet on either the Mac nor the PC. Similarly, there was no Internet on both Mac and PC If I connect Ethernet only between the modem and the router but not between PC and router. So, the question is whether a third unknown party has gotten hold of my Mac IP address and is trying to break into the Mac? Can it steal my personal info?
(4) How can I repair the Mac now and prevent future recurrences? Is changing the IP address the way to do it? (But like I said before I had tried but could not change the IP because I did not have Internet access on the Mac. Is there an alternative method?)
(5) I wonder if a computer's IP address remains constant if you don't change it. The reason I am asking this question is because the aforesaid window message on the Macbook--not sure about the iMac--shows a different IP address--a few numerical digits were changed--almost every time it pops up following every failure trial of mine to access the Internet. Was the Macbook trying to change the IP for me or was there some thing not right?Re: Another device on the network is using your computer's IP address.
This message/problem was occuring intermittently for me in a household with two MacBooks accessing one Airport extreme. Rebooting the modem and router would only temporarily fix the issue for me, so I spoke with a friend who works for Apple and it seems that the Airport Extreme settings were at the root of our particular issue.
The router(Airport Extreme) recieves only one IP address from the modem and in order to allow it to share the IP address with two computers at once, the solution in my case was through:
Applications>Utilities>Airport Utility>Manual Setup>Internet
under Internet Connection- Select "share a public IP address"
under NAT, check the box for "enable NAT Port Mapping Protocol"
(this will allow the sharing of one public IP address with multiple devices)
if this is a new setting, then click "Update" and the Airport Extreme should reboot itself with new settings applied.
When all else is working properly, this is a satisfactory solution in my case.
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