Why would this appear on my screen? This computer's local hostname "Lloyds-iMac-4.local" is already in use on this network. The name has been changed to "Lloyds-iMac-5.local".

This popped up on my screen.  No idea why. Have i been hacked?

There are several possible causes for this behavior.
1. Two (or more) computers on the local network have the same Bonjour name, such as "X's-MacBook-Pro.local". Resolve the name conflict by renaming one or more of them in the Sharing preference pane.
2. You have two simultaneous connections to the same local network: probably Ethernet and Wi-Fi. If applicable, disconnect the Ethernet cable or turn off Wi-Fi.
3. A Mac wakes from sleep due to network traffic. This is a bug in OS X that may only affect some models.
4. A device that gets its network address from the router wakes from sleep, and the address it was using before has been assigned to another device.
5. A third-party wireless router has incompatible settings or firmware. In that case, refer to the manufacturer or ISP for support. Restarting the router may help, temporarily.
6. See also this support article.

Similar Messages

  • This computer's local hostname is already in use on this network the name has been changed to

    I've been getting this error after waking my computer from sleep. I think it has to do with my airport extreme. Does anyone have a fix?

    Sometimes this message means that you have two simultaneous connections to the same local network: probably Ethernet and Wi-Fi. Disconnect the Ethernet cable or turn off Wi-Fi.
    Sometimes it happens because a device that gets its network address from the router wakes from sleep, and the address it was using before has been assigned to another device.
    Rename the computer in the Sharing preference pane.

  • HT5167 Error after 10.7.4 upgrade..."computer's local hostname ........is already in use on this network.  The name has been changed to......  What to do now to get it back to status before 10.7.4 upgrade?

    Error after 10.7.4 Lion Upgrade to iMac
    Computer's local host name .......is already in use on this network.  the name has been changed to........
    and it keeps adding up the number each time I wake the iMac.
    What to do to get it back before upgrade error?

    Ok worth repeating, hope this works.  Finally spoke to AppleCare Support and walked me thru following...restart computer holding down "command" and "option" keys at the same time with letters "P" and "R" when computer turns on.  This is what he called a PR restart, clears out discrepancies in memory (if that is what the error message actually is).  Then went to Systems Preferences/Network/Sharing and deleted the number that kept increasing every time MAC would wake up.
    Even tho this was just done, I am hopeful that error pop-up won't happen again.  Fingers crossed!

  • What does this mean?  This computer's local hostname "Linda-Daviss-iMac-4.local" is already in use on this network. The name has been changed to "Linda-Daviss-iMac-5.local".

    What does this mean: This computer’s local hostname “Linda-Daviss-iMac-4.local” is already in use on this network. The name has been changed to “Linda-Daviss-iMac-5.local”.
    When I came back to my computer this message was on the screen.  Should I be concerned ? or doing something?

    Sometimes this message means that you have two simultaneous connections to the same local network: probably Ethernet and Wi-Fi. Disconnect the Ethernet cable or turn off Wi-Fi.
    Sometimes it happens because a device that gets its network address from the router wakes from sleep, and the address it was using before has been assigned to another device.
    Rename the computer in the Sharing preference pane.

  • Should I ok "this computer's local hostname Irma-Mac-mini-local" is already in use on this network. The name has been changed to Irma2 Mac-mini 2-local

    Should I ok this message-this computer's local hostname Irma's Mac-mini-local is already in use on this network. The name has been changed to Irma's Mac-mini-2local

    Don't think this is a conflict with IP Addresses or computer names
    = DHCP hangover when computer renews DHCP lease
    There is no actual other computer
    It just appears that way when reconnects so creates new -2 computer name
    What types of names do you use your computers ?
    Whether you name them after quantum particles or the romantic poets...
    They will each start to be appended with "-2" then "-3" etc if you auto configure network settings from Airport Router  DHCP service and you have this Change computer name issue where pop up window states name is already being used on your LAN
    As stated previous post you can reset the computer name in SysPrefs / Sharing / Edit button
    And restart Router or renew all DHCP leases (if persists in not allowing original name)
    Can now press Edit and reset name of choice
    But for Fix see link above

  • Every time i wake my mac i get This computer's local hostname "D-360.local" is already in use on this network. The name has been changed to "D-444.local".

    error message that my local host name is in use and the system generates a new one every time I wake my mac the error mssg reads This computer’s local hostname “D-360.local” is already in use on this network. The name has been changed to “D-444.local”.

    There are several possible causes for this behavior.
    1. Two (or more) computers on the local network have the same Bonjour name, such as "X's-MacBook-Pro.local". Resolve the name conflict by renaming one or more of them in the Sharing preference pane.
    2. You have two simultaneous connections to the same local network: probably Ethernet and Wi-Fi. If applicable, disconnect the Ethernet cable or turn off Wi-Fi.
    3. A Mac wakes from sleep due to network traffic. This is a bug in OS X that may only affect some models.
    4. A device that gets its network address from the router wakes from sleep, and the address it was using before has been assigned to another device.
    5. A third-party wireless router has incompatible settings or firmware. In that case, refer to the manufacturer or ISP for support. Restarting the router may help, temporarily.
    6. See also this support article.

  • I get this message:This computer's local hostname "x-8.local" is already in use on this network. The name has been changed to "x-9.local" I have turned off sharing and it continues to upgrade name. What is the fix?

    I get this message: This computer’s local hostname “x-8.local” is already in use on this network. The name has been changed to “x-9.local” I have turned off sharing and it continues to upgrade name. What is the fix?

    Hi, this is a common problem, mostly just irksome though.
    It can have many cause, like using more than one Interface for connections, Router temporarily losing x.local & seeing a new connection with x.local already used, insists it must be x-1.local, x-2.local, etc..
    What all Sharing do you have enabled?
    Some possible fixes...
    http://forums.macrumors.com/showthread.php?t=542899
    https://discussions.apple.com/thread/3941367

  • I recently got a message on my screen that says "the name of your computer is already in use on this network. The name has been changed to *

    I recently got a message with an exclamation mark stating "your computer name is already in use on this network. The name has been changed to ______"
    How did this happen, is it phishing, malware, or did someone hit some button on here to change it. I'm hoping that someone else doesn't have access to everything on my computer now. Help!

    Hello RaptorTrish,
    Interesting name!   You don't say what computer you are using, the OS or the nature of the network, home, office etc.    Could you fill in a few details.  
    You are right to be concerned but there is often a simple explanation.

  • Why do I get the messagehis cowhy do I get the messageThis computer's local hostname "lenajs-imac.local" is alreamputer's local hostname "lenajs-imac.local" is already in use on this network. The name has been changed to "lenajs-imac-2.local".

    why do I get the message "this computers local host name ______is already in use by the network

    Usually this message means that you may have two simultaneous connections to the same local network: probably Ethernet and Wi-Fi. Disconnect the Ethernet cable or turn off Wi-Fi. If that's not the issue, shut down any virtual machines (Parallels, VMware, or VirtualBox) that are running. Rename the computer in the Sharing preference pane.

  • The name of your computer "Alpha (3376)" is already in use on this network. The name has been changed to "Alpha (6759)".  Why do I keep getting this message?

    I keep getting this message every time I log in.  Why?   I have an iMac with sharing on for my networked printer and to share file between the iMac and my MacBook.  Can anyone help?

    This is an annoying but not disastrous thing. Your computer sends messages on your home network and each message includes its name. If your computer is restarted or if it goes to sleep and wakes up all those messages should now gone but sometimes when the computer reconnects to the network it picks up a message with its name in it. Your computer doesn't realize its an old message from itself, it thinks the message is from a computer with the same name and that's not permitted so your computer's name is automatically changed.
    Temporary solution (or not): turn everything off - your computers, printers, internet modem and router; any and all devices that are connected to your network. Then restart them. I hear about this issue all the time and this solution has been temporary for some people (days, weeks, or months) and for others it has seemingly solved it totally.

  • The name of your computer "name(7)" is already in use on this network. The name has been changed to "name (10)".

    I know why this happens - there are two network connections to the same network. One is wi-fi, the other is ethernet.
    I can stop it happening by turning off wi-fi.
    I'd rather keep both connections, though.
    Is there a way of adjusting this so it stops doing it?
    Should I be using the route command to set up different routes to the two links?
    If so, what's the best way to do this?

    I thought about it ...
    The name of the computer have different meaning.
    Normally, the computer name, or in this case 'hostname' refer to the RFC of DNS, Domain Name System IP Service, that resolving 'speaking names' to IP adresses. If your Computer is a Part of the global, Public Internet and so listed on a Public Domain Name Server, the function 'global hostnames' should bei used.
    The local hostname refers to the apple Bonjour Service, to solve local network units. (http://support.apple.com/kb/ph3763)
    The need of different interface names for your Computer sounds strange to me, because the name represent the same machine, the same services your computer offer in your Network.
    I had similar symptoms in my network, because i Need to use both interfaces (ETH an WLAN). But, this problems were related to adress conflicts, refresh time of routing tables in my network. Since i use static IP adresses for my mac interfaces, all things ok and i never seen again any problems.

  • Clicking on iTunes ikon and I get the message the item iTunes.exe that this shortcut refers to has been changed or moved, so this shortcut will no longer work properly.  What can I do, I can't open Itunes.  I have over 4000 songs in iTunes that I had

    When I click on the iTunes ikon I get a box pop up which reads  Problem with shortcut.  The item iTunes.exe that this shortcut refers to has been changed or moved, so this shortcut will no longer work properly.
    My computer which is a packard bell vista operating system, recently stopped working as the power supply overheated and blew up and it has recently been sent back to the Know How team at PC world and it seems to be since it came back I now cannot open iTunes.  I have also tried to search for iTunes in the search bar, I can see several files, but can't seem to open any of these either.  I think that quicktime isn't working, either.
    I have over 4000 songs in iTunes that I had recorded from my collectiong of CD's am  going to loose all these now?  Can anyone help, with very easy instructions as I really don't know what I am doing??
    Thanks

    I would copy over the entire thing if you have room.  With iTunes 10.4 though, you can download any previous iTunes purchases you have made in the past with your current iTunes account.  While in iTunes, look at the left hand side of your screen and select "Purchases" and look at the bottom right corner of the screen and select "Download Previous Purchases".  If you have an iPhone, iPod and/or iPad...you can do the same thing from each device.  Nice new feature...just remember that those ripped CDs need a back-up!!!  Enjoy...

  • RSA1 error  Logical system name has been changed for this system

    Hello All,
    Earlier the RSA1 was activated for client 300 on our crm 5.2. after that we changed the client to 500 using SE16 -> Type table RSADMINA / Check Colum BWMANDT -> 500.
    But now when we login to client 500 and execute RSA1 it is showing
    Logical system name has been changed for this system"
    In scc4 we have not made any changes. Can you tell what should be done ? in the pop up it is showing following steps
    Change the name of the logical system (table T000) for client back to SIDCLNT300. This enables you to continue working with the system.
    If you really want to change the logical name, than you can, if and when you:
    change the system name back to SIDCLNT300,
    delete all existing connections between this system and other systems,
    delete all transfer structures that still exist, and
    do not use ALE or Workflow.
    Guys do you know how to fix this ? .
    Also do you know Assignment of Source System to Source System ID (table RSSOURSYSTEM) using RSA1 ?
    Edited by: Sahad K on Mar 17, 2008 10:55 AM

    Hello Hari,
    Both the options you said  cannot be used
    since the logical system SIDCLNT300 is used by client 300 and it cannot be given to client 500.  Also there already exist a logical system SIDCLNT500 which is assigned to client 500.
    I found out the issue. In the table RSBASIDOC  the logical system name that can use rsa1( bw  client )is set as  SIDCLNT300).  Only if we delete that entry and set it to SIDCLNT500 ( 500) we can use it on client 500.
    The solution is specified in /message/3284842#3284842 [original link is broken]
    Let me try the solution 2 and inform you.
    Solution 2:
    You cannot delete the source system. Two cases have to be distinguished:
    The source system still exists.
    Switch to Transaction SM59. Find the destination which has the same name as the logical system of the source system from field SLOGSYS in table RSBASIDOC (see above).
    Such a destination does not exist in Transaction SM59. In this case, you have to create the destination to the source system. Name the destination equal the entry in SLOGSYS from above. Then return to the Administrator Workbench and repeat the deletion.
    The entry exists but a remote login is not possible. Correct the communication parameters.
    Everything works. Change to Transaction SE37, function module RSAR_LOGICAL_SYSTEM_DELETE, Sngl. test. Parameter I_LOGSYS = <log. name of the source system>, I_FORCE_DELETE = 'X'.
    The source system no longer exists or was replaced with another source system with the same IP address.
    Proceed as described in the first case but make sure, that the field 'Target host' contains a not existing server in the maintenance screen of the destination (Transaction SM59). If necessary, change an existing entry. Later when you delete, the system asks you whether you want to delete, although the source system is not available. Select 'Ignore'.
    Incase you have any idea other than this please let me know how to edit the RSBASIDOC table  and change the entry to client 500.
    Edited by: Sahad K on Mar 18, 2008 5:07 AM

  • I just downloaded the latest itunes update 11.1 and now I get an error messages saying "The item 'iTunes.exe' that this shortcut refers to has been changed or moved, so this shortcut will no longer work properly."

    I just downloaded the latest itunes update 11.1 for windows 7 and now when I try to open itunes with the shortcut on my desktop I get this error message: "The item 'itunes.exe' that this shortcut refers to has been changed or moved, so this shortcut will no longer work properly."  I can't open itunes at all.  Is there anything I can do or is there a problem with the new update?

    Start > Programs = Firefox
    Does that shortcut work?
    If so, delete the current shortcut that is in the Quick Start tray and drag the one that is in Start > Programs down there.

  • This document enabled extended features in Adobe Reader. The document has been changed...

    I am trying to distribute an interactive order form to approx. 50 recipients with Acrobat X Standard which I purchased recently.  Computer is Windows 7.
    I can go through the form editing and distribution as usual, but when I (or a recipient) opens up the distributed form with Adobe Reader, they get the message: “This document enabled extended features in Adobe Reader. The document has been changed and use of extended features is no longer available. Please contact the author for the original version of this document.”
    Oddly enough, sometimes is does work, but 90% of the time it doesn’t.
    And I have another, older XP computer with Acrobat X installed, and it works fine 100% of the time – weird....can anyone help?

    Hi Ken
    We have so many people who have not updated they are trying on 9. I might just have to tell them we can’t support under reader 10.
    Thanks
    Tania
    Never tell people how to do things. Tell them what to do and they will surprise you with their ingenuity. -General George S. Patton
    Tania Lindenmayer \ Manager Organisational Shared Services \ Jabiru Community Youth & Children’s Services Assoc (Inc) \ Ph: (07) 3269 0044  Fax: (07) 3869 0675 \ [email protected]<mailto:[email protected]> \

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