There is a unknown device in the network map

Similar Questions

• Windows cannot create the network map. Responses of the other devices on the network are delayed or on the network, there is a router incapatible

  Original title: no network card
  I installed a NETGEAR N300 Wireless USB Adapter on my computer which is a desk top Dell 64-bit running Windows 7 Edition Home Premium. There are five computers on my network. Two of the others use the same model of NETGEAR wireless USB adapt. I removed the Ethernet cable after the installation of the wireless adapter. I can say that the new wireless adapter works fine. When I tried to map the network I got the same message that appears in some of these problems: "Windows cannot create the network map. Responses of the other devices on the network are delayed or there is a router on the network incapatible". I have restarted this computer in SafeMode as suggested in the above problems. I tried other things like disabling the wired connection has always existed for the cable. No effect. Then I tried mapping the network on the other computers. All failed with the same message. All the other four computers are 32-bit. Three of these computers are also running Windows 7 Home Premium. They are the best desktop computers. The other computer is a Windows 7 Starter netbook running. It is the 32-bit computer, always using a cable. That will be replaced with the same wireless adapter model NETGEAR. Anyone know how to fix this or is this a bug? It would be nice of the network software of Windows 7 has worked as it is supposed to. TO.

  I went the last wired wireless computer and the problem disappeared. The five computers can view the map now without any problems.

• Windows 7 network can't see multiple devices on the network

  Hi all.  I'm about to leave my hair on this issue - I hope someone can prevent the horror that would be me without hair.

  I am running Windows 7 Home Edition on a personal computer that is connected via cable to a router UVerse also providing my home with wireless services.

  A few months ago, I could see - of my PC, network and devices and printers - the two PS3, XBox systems and Samsung TV devices that are connected to my wireless network.  Apparently randomly, my computer has ceased to be able to see these devices.  After trying everything I could think of, I've finally reformatted the system (before Christmas) and everything was good again until last week when my computer stopped once more to see these devices.  I * really * don't want to reformat my system again...

  Here are some details on where I started after the last reformat:

  The PC is connected to a homegroup.

  The PC has a wired connection to the router.  The devices are connected over wireless.

  The firewall is turned on.

  AVG anti-virus has been activated.

  Network discovery, file and sharing printers and streaming media are all enabled.

  Password sharing is disabled.

  Devices could stream Netflix/Hulu as well as files on my computer (using the PlayOn Server - I've never used WMP).

  Now my devices can still Streaming Netflix/Hulu, but not the files on my computer.  The PC can't see the devices and the devices cannot see the PC.

  Here is a list of most of the things I've tried to solve (although I've done so many things, I probably don't forget some):

  I added the PC to the wireless network, so now that it is connected both cables and wireless.  I even tried to fill these connections, although I removed the bridge when I saw that there was no difference.

  I have disabled the firewall completely.

  I disabled the AV entirely.

  I switched a residential group to a working network and vice versa.

  I gave you the assigned IPs devices in the router configuration.

  I've rolled back all the windows updates installed since the last time the devices showed in the PC network.

  I've removed the devices on the network, reconnected the and reconfigured to ensure that they have the media streaming (if applicable).

  I did several reboots the PC, the router, and devices.

  I added the PlayStation Network and XBOX Live and applications hosted under NAT/game on my router.

  I have enabled file sharing for devices that use 40 encryption or 56-bit.

  Additional troubleshooting information:

  When I try to add a device using the Add Device dialog box, no device never shows.

  Under media streaming options, when I look at instruments under all the networks and Local network, no unknown device only shows (even in WMP).  All devices that * show are already set to 'allow '.

  If I have access to my router configuration, the devices will appear as connected.

  I can ping devices from the PC.

  I searched endlessly on the Internet (including other threads on this forum) and have tried all of the suggestions I thought.  The only thing I can't do is activate uPNP on my router because routers Uverse do not offer this option.  However, I don't think that it's important because my PC could see these devices for some time after my last reformat and made no changes to the configuration of the router.

  Because multiple and different wireless devices are involved, and because a reformat solves the problem, in my view, it is a Windows problem, but I can't understand what to change on my system to make things work again.

  Anyone have any ideas?

  Hello

  Thanks for posting your query in Microsoft Community.

  It's a shame that you have to format the system first and now, the problem still persists. I really appreciate the efforts made to try to resolve the problem. This can be due to any dispute of third party software due to which the connection failed. I suggest you follow the methods below and check.

  Method 1: Run the network troubleshooter to diagnose the problem.

  Run the network troubleshooter

  Method 2: start the computer in safe mode with network and then perform the clean boot.

  Step 1: restart the computer in safe mode with network and check if the problem occurs, proceed as in the link:

  See: , start your computer in safe mode

  Step 2: If the safe mode with network works, perform clean boot and check if any third-party application is causing problem.

  Put your system to the clean boot state helps determine if third-party applications or startup items are causing the problem. You must follow the steps in the article mentioned below to perform a clean boot.

  How to perform a clean boot in Windows

  Note: see 'How do I reset the computer to start normally after a boot minimum troubleshooting' to reset the computer starts normally after troubleshooting.

  Method 3: To enable the network devices to display on the network map, they must meet four requirements:

  • Must be a HOME network or work: Mapping network only display the devices connected to a HOME network or WORK location. Devices connected to a network PUBLIC or FIELD cannot be displayed using the network card.
  • Devices must be DETECTABLE: The network discovery setting allows devices to be able to be seen by other devices on the same network. For more information, please consult: , enable or disable network discovery
  • Devices must comply with the LINK LAYER TOPOLOGY DISCOVERY Protocol: Topology Discovery LLTD (Link Layer) is a protocol developed by Microsoft to enable networked devices to 'discover' each other. If a device does not use the LLTD protocol so it can not be displayed in the network map. Windows 7 computers have the LLTD protocol implemented.
  • LLTD must be enabled on your LAN connection properties: The Link Layer Topology Discovery Mapper of e/s driver and the Link Layer Topology Discovery responder must be enabled on your local area connections properties panel.

  To check LLTD is enabled, you can refer to the following steps:

  a. Select open network and sharing Center by clicking on the icon of your network down to the right of your task bar:

  b. now, click connect to the Local network

  c. now, click on Properties

  d. ensure that two LLTD options below are selected (by default, these options are still enabled in Windows 7).

  From now to try the methods above and let us know the status. We will be happy to help you further.

• There was a problem connecting to the network

  It identifies the network properly even when I put the password - and that is the password - the comment poster 'there was a problem connecting to the network.  The WiFi network, you are trying to reach cannot be found. "Yet he already told me that the network is correct.  Frustrated!

  Is the network that you connect to your personal or public?  On my home network, I turned on an access control and when you are trying to connect with an unauthorized device, we get similar behavior.  It does not connect despite all the correct information.

• Problem of password of account, without that we can connect to the network on this computer. The error indicates, "the trust relationship between this device and the network is no longer valid.

  Hi, I hope you can help with this problem. A friend has 6 computers networked to a Tower Server and have a problem. A worker student put computers into hibernation, and since then, nobody can connect to the network on this computer. The error indicates, "the trust relationship between this device and the network is no longer valid. I tried to get into the pc to try removing network and replace it, but I can't get on the Administrators account because it has been disabled. I'm at a loss on how to proceed. My friend cannot afford a service call, so I'll try to help him.  Thank you

  If the computer is on a domain then there are at least two accounts that can be used to remove the computer from the domain:

  • A domain administrator account.
  • A local administrator account.

  When your friend has launched Windows for the first time after buying the machine, he was prompted to enter the name of an account. This account is created automatically with administrator privileges. He should use it now.

• "Another device on the network use my ip address".

  I tried to check my mail and could not and got this message "another device on the network use the IP address of your computer." I have never seen it before. He also said that I could change the IP address, if I continued to have problems. I bought this iMac and used Migration to transfer all the stuff from my old iMac that is still used. That was months ago, but I never had this message up to now. So should I change one of the IP addresses? And if so, how is that done?

  http://osxdaily.com/2010/09/19/another-device-on-the-network-is-using-your-Compu ters-ip-address.

• That means "another device on the network use the IP address of your computer"?, that means "another device on the network is using the IP address of your computer?

  That means "another device on the network use the IP address of your computer"?, that means "another device on the network is using the IP address of your computer?

  A

  Most likely, the computer becomes a network address of a router. The assignment of an address ("lease") expires and must be renewed after a certain period of time, which could be an hour or a day. The lease expired without being renewed because the device has been disconnected at the time. Meanwhile, the address has been leased to another device on the network, or maybe the router has not updated its list of addresses the leases. When the device offline comes back online, a conflict results. Depending on the type of router you have, the conflict can resolve itself automatically. If not, then in the menu bar, select please

  ▹ System Preferences network ▹ 

  If the preferences window is locked, click the lock icon in the lower left corner and enter your password to unlock it. Click the Advanced button, and then select the TCP/IP tab in the sheet that drops down. Look at the menu option

  Configure IPv4

  If the selection in this menu is

  Using DHCP

  Click on the button

  Renew the DHCP lease

  Test.

  Make sure that you have more than one DHCP server on the network. That could happen if you have more than one access point Wi - Fi, or if you have a router and broadband a wide device distinct in connection mode sharing.

  B

  Less likely, you have a network address that you assigned yourself and another device is itself by assigning the same address. In this case, the selection to configure IPv4 menu will be either manually or using DHCP with manual address. This kind of conflict will not be resolved automatically. You have the following options to solve:

  1. Change the selection in menu using DHCP.
  2. Change the address assigned manually to one that is not used by another device.
  3. Change the address of the other device.

  Which of these options you choose depends on the details of why you use a static IP address. Any changes you make to the network settings is necessary before taking effect. To do this, click OK, and then click apply.

  If the router is also your device at wide band, then he may be operating in bridged mode. In this case, only one customer at a time will be able to connect to the Internet. Consult the manufacturer or ISP documentation for how to reconfigure the device in the connection mode sharing.

  C

  According to a report a "DirectTV" receiver can cause the problem. If necessary, disconnect the device from the network, or power off and test. Consult the support services provider.

• Unknown device on the Satellite A100-153, after BIOS update to 5.1

  ACPI\TOS1901 * TOS1901<--- this="" is="" the="" unknown="" device="" after="" bios="" update="" to="" 5.10="" on="" my="" satellite="" a100-153="">

  Vista now shows it in as unknown device manager; the TOS1900 showed up too, but after installation of Toshiba Value Pack for Vista, it went.

  Help, please. WHICH IS: ACPI\TOS1901 * TOS1901

  Hello

  ACPI-> Advanced Configuration and Power Interface
  ACPI defines hardware and software interfaces that allow focus on the OS configuration and power management to enumerate and configure motherboard devices.
  For example: ACPI is necessary for the standby and hibernation mode.

  Now your question; the new BIOS has been updated and configured to using VISTA.
  It seems that VISTA was not compatible with the previous version of BIOS because the ACPI interface. Now you can install Vista on the laptop, but it seems that you need a driver. Possibly new chipset driver version might help. But as you probably know, the drivers are not available at this time. Unfortunately

• Is there a later patch that will allow face with XP + SP3 Win 7 to XP to display on the network map?

  WindowsXP-KB922120-v5 - x 86 - ENU.exe

  I recently tried to install this update WindowsXP-KB922120-v5 - x 86 - ENU.exe on a XP Home SP3 system http://support.microsoft.com/kb/922120/en-us + so that my Win 7 PC could properly recognize the XP PC on the network card. I saved the XP HD package and then he ran, but he advised that my XP system is a newer version and so the update was unnecessary and not installed. The network is wired, and both systems can see well that there are certain permissions I need to sort out the XP PC to access files Win 7. I tried to solve KB922120 by reading the online forum and have read most of the questions but no remedy to this problem.
  Is there a later patch that will allow face with XP + SP3 Win 7 to XP to display on the network map?

  Hello

  I suggest you to see link below and check if it helps.

  http://Windows.Microsoft.com/en-ID/Windows7/why-are-computers-missing-from-the-network-map

  (For Windows XP)

  Hope this information is useful.

• LaserJet Pro M127fn Installer cannot find the device on the network

  Hello

  I just bought the product, but during the installation - setup is unable to find the device on the network. Device is properly registered to the address 192.168.0.14 (with static IP address), I can see the dashboard configiration at the same address via browser and all works well with the network itself.

  Try to ping the IP - it's ok. Tried to install without active firewall - also fails.

  Double checked the installation process - with automatic search and provide the IP address of the printer - both failed.

  Also, I rebooted the router and the switch and the computer. Is not new. I also tried downloading the last executable configuration on the site - and even once, it fails with 'device not found on the network.

  Then what do I do to fix this?

  Thank you

  Finally found a solution. It is strange as it may seem, but after all, it's a solution.

  -Rinse your DNS and your ARP cache (see the Google if you don't know what that means)

  -Reboot the router (or, where appropriate - switches)

  -Change the IP address of the device on your network. Try with round numbers like (192.168.0.20)

  -Restart your router (and if applicable - switches)

  -Restart your computer (s)

  -Don't run the Setup again and the hoprefully you will have no errors and everything works perfectly for you

  If your problem, similar to mine, persists, repeat the above process again and again... and again...

  Good luck

• What is this line dotted on the network map?

  I'm just curious as to what this line dotted on the network map?

  

  Hello

  According to the description of the problem, I understand that you are asking some about the network card and dotted line. I've certainly you will help answer your query.

  The following diagram illustrates a typical presentation of home network with several computers and other devices connected to each other through several components of the infrastructure and to the Internet via a router.

  The network map lets you see the devices on your local subnet, and how they are connected to each other and to the Internet. The computer on which you build the map is displayed in the upper left corner. Other computers on your subnet appear on the left. Infrastructure devices, such as switches, hubs, and gateways to other networks to appear on the right.

  The green line indicates the device you are currently using in the visualization of the network card. The solid line indicates a wired connection, while the dotted lines indicate that the device is connected through the radio.

  Hope this can help, please write back to us if you need more help, we will be happy to help you.
  Concerning

• removed from the network computers still will appear on the network map

  I have removed two computer laptop computers fom my network and removed in the network map.  They are no longer on the PREMISIS (sold).  Subtracting them to the magic of the network, I removed the network locking, set up as 'Follow-up as intruders' and they removed the network card.  I then reset the locking system.  When I bruing to the top of the map of the network, they are gone.  However, after a few minutes, as they appear again.  How can I remove them permanently from my network?

  Your network card is like showing wrong info. You can follow the steps on this link: http://www6.nohold.net/Cisco2/ukp.aspx?vw=1&docid=8571edab25b54432bfb7b7672a577b8f_19407.xml&pid=80&.... This is a guide for you refresh the service of the network magic software platform and then check if after doing the steps in the network card will always show the same information.

• I have 3 computers in a network; two Vista and one running windows 7. The computer of windows 7 can be placed in the network map.

  Hi, I have 3 computers on the network; two Vista and one running windows 7.  The computer of windows 7 can be placed in the network map (and I seem to be unable to it remote desktop).  This could be the cause?  I tried everything in the help documentation.  My router is a linksys 610n.  Computers have no NVIDIA cards or controllers.  Here's a screenshot of what I see in the network adapter:

  Hello

  Excellent Sam Job Varkey information should contribute to solve in this case, however some is
  Added information that can help as appropriate:

  Share files and printers between Windows 7 and XP
  http://www.howtogeek.com/HOWTO/Windows-7/share-files-and-printers-between-Windows-7-and-XP/

  Configuration network host connection windows 7, xp and vista
  http://Techblissonline.com/home-network-setup-connecting-Windows-7-XP-and-Vista/

  Networking of computers running different versions of Windows
  http://Windows.Microsoft.com/en-us/Windows7/networking-home-computers-running-different-versions-of-Windows

  =========================================

  More help at these locations: (Vista references also apply to Windows 7)

  Vista - LAN
  http://www.onecomputerguy.com/Networking/vista_network.htm

  Vista network and sharing Center
  http://www.onecomputerguy.com/Networking/vista_network_sharing_center.htm

  Setting up a network home
  http://Windows.Microsoft.com/en-us/Windows7/setting-up-a-home-network

  Setting up a wireless network
  http://Windows.Microsoft.com/en-us/Windows7/setting-up-a-wireless-network

  Home network, wireless network and computer networking Made Easy
  http://www.home-network-help.com/

  Windows Vista tip: How to install and connect to a wireless network
  http://www.watchingthenet.com/Windows-Vista-tip-how-to-Setup-and-connect-to-a-wireless-network.html

  Networking tutorial home
  http://www.tehnomagazin.com/computer/home-networking-tutorial.htm
  Practically networked - everything you could possibly want to know.
  http://www.practicallynetworked.com/

  I hope this helps.

  Rob Brown - Microsoft MVP<- profile="" -="" windows="" expert="" -="" consumer="" :="" bicycle="" -="" mark="" twain="" said="" it="">

• Get airport utility to forget the other devices on the network view

  Hello

  Is it possible to get the Airport utility to forget other devices, it's on the graphic display? I live on a college campus so it displays about 15 other aircraft from the airport in the vicinity of my home and I would like to see it just mine! When I was updating the name and password on my base station, Airport utility gave me the option when I clicked on the other devices to 'Forget' them, but as soon as I close, then reopen the Airport utility all return and the only option I have to then when I click on another device must enter the password for it (which of course) ", I do not have).

  Outside him cluttering up the graphic display, I wonder whether, if all these devices are recognized as part of 'My network', is sometimes interfere with my access internet and wi - fi as the speed and the same connection seem to go up and down like a yo-yo (sometimes up to 90 Mbps but also weaker than 0.05 Mbps - less than the old dial-up!). I have been informed by our IT Department University detects a problem with your local network, it can "bleached you' which cuts or slows down your connection into a net - and if all these devices are considered by Airport utility as part of my network so I'm guessing that a problem in one of the base stations that could affect the rest.

  So, is it possible to get just the Airport utility will display only my own base station (Airport Extreme) over a wi - fi (Airport Express) extension?

  Excellent question...

  First airport utility keeps a history of all the airports that he never sees and even if you select forget he never forgets... you need to dip down and remove the plist... as with all things Mac.

  / Users/youusername/Library/Application Support/Apple/AirPort/SavedTopos/Topo-nIfc=en0,nHsh=00000000.plist

  There are a lot of them dated for every time the network topography change. Close airport utility and delete the entire lot... a new will be created when you restart.

  What OS you are using... There is an option... but I'm not sure it works... to show only devices you set up.

  So, open airport utility preferences. Click monitor airport basestations for problems... then don't watch that airport base stations which I configured... Tell me what happened to him.

  

  Outside him cluttering up the graphic display, I wonder if, if all these devices are recognized as part of 'my network ',.

  No, it's just the airport utility is a bit too excitable to find other airports of apple around the place and wants to watch all the...

  They are not part of your network... but in small areas Wireless will cause problems... it, without doubt. Most of the colleges banning people who run their own wireless routers because the result is what you feel... CHAOS.

  There are 3 channels for 2.4 ghz and perhaps 6 or 7 for 5 GHz Wireless AC must so much bandwidth, you have more than 3 or 4 channel without overlap... This means that for every 3 airports you have exhausted all channels... (and all airports after it's battery on the mill).

  15 other aircraft from the airport in the vicinity of my home

  So that means at least 5 airports are run on the same channel you are on average. Wireless was never designed to ensure that the density of life. It's only the airports... think how no apple routers wireless there's around you that are not displayed.

  Open any program wireless diagnostic... There is a built-in to your Mac. see how many names wireless mac can pick up.

  I highly recommend that you stick to the use of the 5 GHz band using a different name... and choose depending on the channel works best for you. No Auto and just stick...

  You'll never find that it works without problems... but there is no doubt that life is easier if people started to build a faraday cage to live in or used ethernet.

• Satellite C70D-B-306 - 2 unknown devices in the list of devices

  Hello

  I have a PC laptop toshiba C70D-B-306 (psclee) and I reinstalled windows 8.1 since a DVD separate because I change the hard drive by default for a fast ssd drive.

  Everything works, but in my device manager, I have 2 unknown devices listed (with exclamation point), as far as I know I downloaded all the drivers available from the support Web site of toshiba for this laptop and install, but the 2 unknown devices will simply not disappear.

  Can someone tell me which driver I need exactly for these 2 devices?

  2 devices are:
  ACPI\ASD0001\2 & DABA3FF & 1
  and
  ACPI\SMB0001\4 & FE73487 & 0

  As mentioned, I already downloaded all the drivers for this laptop and install, windows is of course to date. Also, I let windows search for drivers on the Internet and on the disc, but no driver found where.

  Who can give me the Golden tip?

  There is a good method to find out what drivers are missing.
  First of all, you should check the DEV (device) and FRI (supplier) codes

  Here's a short instruction how to find this in detail:
  http://APS2.toshiba-tro.de/KB0/HTD0302U00000R01.htm

  Know the vendor and device ID, is not a big deal to get the correct drivers.

  However, you must also install additional software of Toshiba (Toshiba System Driver) out to win 8.1
  Please also note that there are two areas of pilot Win 8.1: 8.1 update Win and Win 8.1 32 bit / 64 bit categories
  Where you would find not all pilots within the Win 8.1 update also check categories of 32-bit / 64-bit Win 8.1.