Another network device is using the same IP adress!!!!!

suddenly appeared on my MacBook Pro a notice that says: (another network device is using the IP address of this computer), I would like to know which is the reason of this notice ????? thanks for your help.

It means another computer, router, phone, etc. likely has a static ip address that is within the scope of your computer's DHCP assigned address or your computer has a statically assigned address that is being assigned by your DHCP server to another device on your network.
Or, a neighbor has connected to your network with a device with a static ip address that is within the scope of your DHCP assigned addresses.
Or, you are having a DHCP server issue. Try rebooting all your devices.

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I have a wireless network at home. I run my iphone and ipad on it with no problems. Just purchased a MacBook Pro, and now my wi-fi keeps disconnecting and i get an error message saying another device is using the same IP address. What does all this mean?

I have a wireless network at home. I run my iphone and ipad on it with no problems. Just purchased a MacBook Pro, and now my wi-fi keeps disconnecting and i get an error message saying another device is using the same IP address. What does all this mean?

Hello AKCamus
To give you some ideas of what to do next, I have provided a few articles that will give some troubleshooting Wi-Fi connections and recommended Wi-Fi settings.
iOS and OS X: Recommended settings for Wi-Fi routers and access points
http://support.apple.com/kb/HT4199
iOS: Troubleshooting Wi-Fi networks and connections
http://support.apple.com/kb/ts1398
Troubleshooting Wi-Fi issues in OS X Lion and Mac OS X v10.6
http://support.apple.com/kb/HT4628
Thanks for using Apple Support Communities.
Regards,
-Norm G.

Get the message - another device is using the same address

I keep getting the message that another device is using the same ip address. I have to turn off my MacBook Pro from wifi and then back on again. Sometimes the wifi doesn't come back on for my MacBook Pro.
Running Mountain Lion. Thought all this hassle would be solved.

To follow up on what Thomas has said.
You have a device on your network that is using a fixed IP address in the range of addresses that your router assigns addresses from. You'll need to figure out what device that is and change its settings so that it gets a dynamic IP address assigned by the wireless router.
Or your MBP has a Fixed IP.
Or if you need certain devices to have Fixed IPs, like a printers which should always be assigned a fixed IP, then you need to assign those IPs out side the DHCP Pool range the router uses to hand out Dynamic IP but yet still in the total range of the routers IP address.

"another device is using the same ip address.." - iOS devices won't connect to AEBS wifi.

I've got a Motorola modem/gateway - 3360 from WalMart. I have the AEBS working in bridge mode connecting my iMac & Printer fine, but my iOS devices won't connect.
While troubleshooting & trying all types of settings, I was able to get EITHER the iMac or the iOS devices connected to internet, but not both at same time.
Then I noticed I am getting "another device is using the same ip address.." message.
I have changed the AEBS ip address & had been able to get either the iMac or iOS devices working depending on which ip address I use.
BUT now, all my iOS devices dont connect to the internet regardless of the ip address of the AEBS.
All my iOS devices see the network, and accept the network password, but they do not connect to internet, circle just keeps spinning...
Any assistance is GREATLY appreciated.
Thanks for any assistance,
Dave

It looks like may have to go back to square one and delete my network & set it up from scratch if I don't figure it out.
If you do go this route, I would like to make a suggestion for your consideration, and that is to assign static IP addresses to devices that are "permanent" on your network or ones you want to make sure can be reachable at all times. These (again) would be servers, routers, wireless access points, network printers/scanners, NAS devices, etc.
I would recommend the following IP addressing scheme as a baseline and you are certainly free to deviate in any way you see fit to meet your networking requirements:
Reduce the number of IP handed out by DHCP. By default, most routers will provide 100-200 private IP addresses within their DHCP leasing scope. The AirPort, by default, assigns 10.0.1.2 thru 10.0.1.200 via DHCP. Your Motorola may assign 192.168.0.2 thru 192.168.0.150. Either way, I would reduce this to no more than fifty (50) total which should provide you with plenty of addresses even if you are hosting gaming convention at your home.
I use the following IP address scheme for the "permanent" network clients:
Network Printers: 10.0.1.200 - 209
NAS Devices: 10.0.1.210 - 219
Wireless Access Points or routers reconfigured as bridges: 10.0.1.220 - 229
Servers: 10.0.1.230 - 239
With the "permanent" devices pre-assigned with static Private IP address that are outside of the DHCP range, you shouldn't ever get an IP address conflict again.

Please can someone tell me how to set up FaceTime between 3 devices all using the same apple ID ( 2 iPads and a iPhone)????, Please can someone tell me how to set up FaceTime between 3 devices all using the same apple ID ( 2 iPads and a iPhone)????

I am trying to set up FaceTime on all my apple devices so I can FaceTime each device but all 3 devices are using the same apple Id and I have no idea how to sort this???

Facetime only works with two devices at a time. You can have the same Apple ID, but the two devices can't have the same email address. Get a new gmail account. Normally you use wifi for connection, however, with iOS 6 and an iPad 3 you can use cellular.
Using FaceTime http://support.apple.com/kb/ht4319
Troubleshooting FaceTime http://support.apple.com/kb/TS3367
The Complete Guide to FaceTime: Set-up, Use, and Troubleshooting Problems
http://tinyurl.com/32drz3d
I saw one post where a user said dust got inside the small microphone hole. Using a vacuum cleaner removed the dust and restored the audio.
 Cheers, Tom

Is it possible to change the Apple id on one device while keeping all purchases and apps? Also, several other devices are using the same apple Id.

There are about 3 devices that use the same apple id. I would like to take my iphone and make my own apple id but I don't want to lose all the purchases that were made on the original apple id

You can sign out and sign in with the new ID. The old purchases wont go away.

If I have multiple apple devices and use the same iCloud login on them, shouldn't apple give us more iCloud storage for each device

If I have multiple apple devices and use the same iCloud login on them, shouldn't apple give us more iCloud storage for each device

Welcome to Apple Support Communities
No. Apple only offers 5 GB of free iCloud storage for all your devices, no matter how many you have got. If you need more iCloud storage, purchase storage.

I have changed my Apple ID on my iPad, but my iPhone keeps popping up with the old ID.....how do I get all my devices to use the same ID?

How can I get all my devices to use the same Apple ID?

Different services on your iOS device (iMessage, Facetime, iCloud, iTunes and App Store) can be signed into with an Apple ID of your choice. Make sure you verify the settings for each device and that you are signed in to each service with the correct Apple ID.
I'll do an example for iMessage:
1) Go to settings on your iOS device
2) Select "Messages"
3) Select "Send & Receive"
4) At the very top you will see "Apple ID", by selecting your Apple ID, you will now have the option to sign out of messages with the current Apple ID, and sign in with the new one.
The steps for changing your Apple ID for other services will be very similar.
tHIS SHOULD BE VERY HELPFUL TOO YOU.

I recently bought Lightroom and installed on one of my computes. I wanted to instal the program on another computer I have, using the same serial number I already bought and I'm not alowed as it says that the SN is not valid. What shall I do?

I recently bought Lightroom and installed on one of my computes. I wanted to instal the program on another computer I have, using the same serial number I already bought and I'm not alowed as it says that the SN is not valid. What shall I do?

It is possible that you downloaded the Creative Cloud trial of Lightroom. The perpetual license key will not work. Uninstall the version on the second computer, this will not interfere with your catalog, preferences and personal files.
Download the appropriate version from the link below and install, your license key will be accepted and everything will be fine.
Product updates

How do I separate 3 different devices all using the same apple ID

HELP PLEASE!! My wife has a macbook which is about 5 years old. We used our only email address at that time as our apple ID. Since then we have bought her an iphone 4 and registered it with the same apple ID. Then a few months later I made the jump from my blackberry to an iphone 4 and used the same apple id. All these devices are now tethered to the same apple id as well as our family itunes account. So, we have a family itunes account, an older macbook and 2 iphone 4's all with the same apple id. With me so far? Now, everything was cool until the iOS update came out for our 2 iphones and came with the new icloud app. When my wife and I set up our icloud accounts everything that was on her phone showed up on mine and everything that was on mine showed up on hers. How do I change the apple id's on her phone and computer, keep the apple id we already have on my phone and continue to share the itunes account? An important note here is that the apple id's are my email address. HELP!!!!

OK this might help you
you need both iphones and the mac next open itunes and click on itunes prefrences now you will need to go to devices and erase all iphone back ups
next plug the phone with your info to the mac and rename that iphone with your name and back it up, After the back up safely remove it
next plug the phone with your wifes info into the mac and follow the same steps.
after the back up is done restore your wifes iphone and when ask to restore as a new iphone you need to scroll down to her name and click on it then do the same with your phone
this will put all info into the corresponding phones

How many devices can use the same rescue email?

I support over 40 ipads at my school. I want teachers to set up a rescue email that comes to me in case they are locked out. How many different apple ids can use the same rescue email address
?

iTunes Store Support
http://www.apple.com/emea/support/itunes/contact.html
It would be best to address your questions there, especially since this is a public forum, and over there you could post more private issues with this set-up. Not to mention, getting more official answers.

Home sharing suddenly stopped working. All devices have home sharing enabled, all devices are using the same network but cant see each other

I've gone through all the Googling and support forums I can handle.. They all tell me to the same things. I have done everything required and quite honestly Home Sharing was working for quite some time. So I don't think I changed anything.
The only culprit I can think of is the wireless network. We had to call Comcast and reset our service, and they gave us a new modem. Our router is also new.
Is there a setting in a router that lets multiple devices connect but blocks each of them to each other? That seems to be what's happening.
Apple TV2 can see our connection no problem and can download trailers (downloading movies never works though!!!), we have two Macs and two iPhones and all are on our wireless and none can connect to one another using Home Sharing.
Please help!! This is an odd one!!

I believe this is true. Alas, I wrote this a while ago and the link is dead. I can't totally remember what the issue was.
But, looking through the PDF for the Linksys e2000, searching for 'filter multicast' I see this:
Filter Multicast The multicasting feature allows for multiple transmissions to specific recipients at the same time . If multicasting is permitted, then the Router will allow IP multicast packets to be forwarded to the appropriate computers . Select this option to enable the filter . This option is disabled by default.
And in my settings it's been enabled. So maybe try that.
Filter multicast is under Securtiy>Firewall after you log in as admin.
Why it's disabled by default I do not know.
Good luck! Hope this is the solution!! Apple should warn people of this feature conflict to Apple TV buyers.

More than one device is using the same email. Help!

I use to have an Iphone in the summer but now its disconnected and i left my apple ID signed into my Imessage. I gave this phone to mom and now i have a new Iphone with the same Apple ID signed into my imessage. The other phone is still disconnected but I am 100% sure she is recieving my messages and I can't get a hold of the other iphone. Is there something i can do to my current iphone so she can stop recieving the messages? Will changing the email that i recieve messages at help? or changing the password to my Apple ID? Please help.

I will restate what is happening.
Network:
House; internet to wireless router BEFW11S4 (wireless=off, DHCP=on), 5 computers wired in plus one wireless bridge WET11.
The bridge talks to a second wireless router in the office (100 feet away). Wireless=on, DHCP=off, different address! There are 3 computers there.
This has worked for years! There is a third wireless router with wireless=off, DHCP=off and with a different address that is used for a hub.
Now people come with laptops and want to use wireless. If any of the routers have wireless=on the network crashes with “more than one device with same address”.
To troubles shoot; I reduced the network down to 3 pieces. Router in house, 1 computer and the WET11 bridge. All have fixed addresses! If I set wireless=on (router), then the bridge and the wireless router communicate wireless and communicate via cat-5. The network crashes.
For a test; I connected all three routers together with wireless=on then the bridge talks to all three via wireless and via cat-5 wire. I tried WEP with different pass phrases on each router and different frequencies. My bridge will talk to all routers it can find on any frequency with any pass phrase. It may not be able to pass files but it can find all the computers.
I believe the router wakes up and sees;
its self 192.168.123.254, computer 192.168.123.100 and a bridge 192.168.123.225
The bridge sees a new network with:
Router 192.168.123.254, computer 192.168.123.100 and bridge 192.168.123.225
And that bridge sees a new network with:
Router 192.168.123.254, computer 192.168.123.100 and bridge 192.168.123.225
“feed back”
I really want the bridge to talk to router 192.168.123.253 (office) but not talk to .254 on the same switch/hub (house).

HT5622 facetime not connecting to all devices that use the same apple id. I have both an iphone and ipad. Incomin facetime calls connect randomly to one or the other or both. (should be coming to both)

I have an iPad and an iPhone, both registered to same AppleID. Incoming Face time calls ring randomly on one or the other or both (and sometimes none). They should ring on both.

check the 'recieve at' addresses you set in settings, facetime. you can have multiple addresses.
On mine, i have thre addresses set the same. I am using both a phone # and my e mail address (neither one is my apple ID, by the way).
If somebody calls me to FT using the phone #, the phone rings first, followed by the pad, about 10 sec later. If they call using the e mail address, they both ring at about the same time. If one or the other answers, the other device stops ringing.
So next time a call comes, wait a bit before answering to see if the other device responds. and check your receive at addresses.
You might want to test a little - have somebody call using one address, or the other, and see if you can track the behavior.

When one network user is logged in another network user cannot on the same machine

I am working on a home network for 5 family members and we are use to fast user switching. Since getting the server up we can no longer fast user switch. If one network user is logged in and we go to switch to a new user the server returns an error and that user can not log into that machine until the first user logs out. I would expect this to work but I have not had any success.
Any suggestions
David urban

Hi,
What is the current setting of Enable user policy polling on clients?
However, if this setting is False or No, the following will not work when users use the Application Catalog:
In System Center 2012 Configuration Manager SP1 and System Center 2012 R2 Configuration Manager only, users cannot install the applications that they see in the Application Catalog.
Users will not see notifications about their application approval requests. Instead, they must refresh the Application Catalog and check the approval status.
Users will not receive revisions and updates for applications that are published to the Application Catalog. However, they will see changes to application information in the Application Catalog.
If you remove an application deployment after the client has installed the application from the Application Catalog, clients continue to check that the application is installed for up to 2 days.
http://technet.microsoft.com/en-in/library/gg682067.aspx#BKMK_ClientPolicyDeviceSettings
In addition, the following to thread may give us some clue:
http://social.technet.microsoft.com/Forums/en-US/6a51488c-ff68-4c83-9b3d-6d03fd74a373/application-catalog-could-not-communicate-with-the-client-control-properly?forum=configmanagerapps
http://social.technet.microsoft.com/Forums/en-US/235f7ef7-e646-401e-9524-008831a32cde/application-catalog-silverlight-error-could-not-communicate-with-the-client-control-properly?forum=configmanagerapps

Another network device is using the same IP adress!!!!!

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