Windows Always Reports IP Conflict On Startup Router Often Needs To Be Restarted?
Apr 7, 2013
I have an issue that started showing up since I bought a new computer. The old computer ran XP, the new one runs Windows 7. Almost every time I start the computer I get an error message telling me Windows has detected an IP conflict. Sometimes when I click okay I get the message a second timeAbout half the time, I have no internet connection when I start up and have to restart my router, which fixes the problem (after restarting the modem, I do not need to do anything like renew with ipconfig; it just starts working). I do this so often I attached it to a power switch to make it easier than unplugging.My setup is this. My PC is connected to a router connected to my cable modem. The router is also connected to a wireless hub. This hub is used by only one device, my Wii U. I can get the error message even if my Wii U is turned off.
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Apr 30, 2011
I am getting a window message which is saying ''Window has detected an IP address conflict. there is another pc on this network that is using the same Ip address.
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Oct 31, 2011
we have a 4510r-e running 12.2(50)SG1 w/ various rj45 line cards and a 24 port glc card.at any given time, i see 10's of ports in 10/full.i go to the station, and find the station in 100/full or 1000/full.
i go to the switch w/ my fluke, connect it directly to the switch w/o any intermediate infrastructure except a 50cm cat6 patch cable.the fluke reports 1000/full, but THE SWITCH PORT REPORTS STILL 10/FULL.all ports are config'd 'speed auto' and 'duplex auto'.
the switch seems to be erroneously reporting 10/full.there are no errors logged on any of the ports and there is successful communications even when the station and switch port report different speeds.even though there are no errors logged nor reported by 'show int [port]' nor 'sho int count error' certain killer applications crash on some stations. (the applications are GHOST (which dumps disk images from a server to multiple stations) and NETOP (which i sused in a classroom to transmit an instructors screen to a room full of stations) both of which broadcast and/or multicast.all nodes involved in the above 2 applics are on the same vlan and same phyiscal subnet.
the ports which report 10/full vary and occur even when the above applics are not in use.the only way i found to clear this 10/full report is by either a hardware reset of the entire module or by unplugging the cable, the execute on the port shutdown, speed auto, no shutdown, reconnect cable.then it's just a matter of time until it pops back to 10/full in a few minutes,hours or days.
how to address the killer applic problems besides restructuring the whole net by defining separate vlan for each lab of 20 or so stations?
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Jan 5, 2013
I have a Netgear WNR612 wireless router, which worked fine for a few weeks. Then something happened and I can't keep the connection anymore. It happened right after I used iTunes to update my iPhone, perhaps a coincidence, but I'm mentioning that just in case. Internet still works fine with ethernet cable straight from the computer, only the wireless connection doesn't work. This happened about a month ago and I haven't been at home much to fix the problem. I have turned off and unplugged everything for several days at a time while gone. I get a Network Error message saying, Windows has detected an IP address conflict. I have tried restoring the router back to factory settings and reinstalling the wireless card. I have tried changing the IP address settings both in the Network and Sharing Center and the router admin page. What I think I should do is change the IP address in Command Prompt, but when I type "ipconfig /release", it says "No operation can be performed on Wireless Network Connection 2 while it has its media disconnected" and the same for Local Area Connection. I don't understand what this means, because there is a wireless key in my keyboard and there is a white light (not orange) like there should be. Also in the Network and Sharing Center, I can see that the connections are enabled.
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Oct 25, 2011
I'm connected to my router via an Ethernet cable, and on the connection icon I have the yellow triangle and a message indicating I have no internet access...but I do. My internet is fully connected and I have no problems remote connecting to my computer from work, downloading and seeding torrents or browsing websites. Problems is, it seems that Windows THINKING it's not connected is affecting other programs which need to connect to the internet.
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Oct 5, 2012
We have a Cisco ACS 5.2 deployment (appliance). It has an existing integration with Active Directory. We utilize this with RADIUS to authenticate our wireless users and TACACS for managing our network equipment.The RADIUS reports are useful for other teams (outside my own) to be able to troubleshoot password and account lockouts (everyone forgets to change the password on their phone).I would like to allow this team and other access to view the RADIUS authentications report.
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Jan 29, 2013
I've got a wireless network, consisting of two Windows 7 PCs, a wireless printer, an Android tablet and an iPhone. The PCs are always on the network; the other devices only connect occasionally. The router is a Dynamode R-ADSL-C4-W-G1. IP addresses are assigned by DHCP, and both PCs are set up to get an IP address automatically.Now and again, I get an error message on my PC, saying Windows has detected an IP address conflict on the network. I looked in the System Event Log, and found the following message: Quote:The system detected an address conflict for IP address 10.0.0.3 with the system having network hardware address [hex number here]. Network operations on this system may be disrupted as a result.
When I checked in the router settings, I found 10.0.0.3 had been assigned to the other PC, which also has the hardware address given in the error message - I'm not sure how that constitutes a conflict!When I get this error message, I never encounter any connectivity problems - i.e. both machines can still access the internet.
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Feb 8, 2011
I've got a Belkin N+ Wireless router. Every day or two, all internet connections fail. If I pull the power plug on the router to restart it, all connections come back up as normal.
Is there something I can pinpoint that is causing this? Is the router getting "overloaded" or something? I didn't see anything in the router settings that I could tell would be related to this. Really getting tired of having to constantly manually restart this thing...
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Mar 20, 2011
I have been having router/wireless internet issues since my internet provider had to come out and fix the outside lines. Ever since then I get the Network Error: "Windows has detected and IP address conflict" whenever my laptop and my wife's try to use the wireless at the same time. I have tried release/renew of my IP address and also reseting my router to factory settings to no avail.
Computer info and ipconfig/all:
Tech Support Guy System Info Utility version 1.0.0.1
OS Version: Microsoft Windows 7 Home Premium , 64 bit
[Code].....
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Oct 19, 2012
There are about 3 laptops, one desktop, and 2 gaming consoles that are using the router. Everything connects fine expect the one laptop. It is an ASUS laptop running Windows 7. Whenever the laptop is going to connect to the internet every other device using the internet is stalled for a few moments, then reconnects. The computers then give the IP Address Conflict message. This is extremely frustrating. Sometimes it happens when people are accessing the Web for college assignments, and sometimes gaming, which is annoying to get disconnected from. I have tried to release / renew the IP, but it tells me it can't complete the process.
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May 18, 2011
I have recently started getting random 'Windows System Error- There is an IP conflict' blah blah blah messages on my PC, this only seems to happen when I also have the wireless switched on on my HTC Desire phone.I have done the usual checks and everything in the house, that is connecting to the wireless (2 phones and a laptop) is on a different IP address so as far as I can see there is no actual conflict.I have a Netgear WPN824v2 Router with the main PC connected to it. Sometimes it goes for ages without doing it or I can get one after the other, sometimes the PC drops it's internet connection altogether.
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Jan 28, 2011
Recently, nearly every time I start up my computer, I can't connect to the internet. I have internet, as says my modem, what I don't have is an internet adapter. I've checked the device manager, and network and sharing center, and it just doesn't exist. I restart a few times and by chance it finds the adapter and I can connect. I have no idea what's going on, as Googling has not worked much at all.[CODE]
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Jul 22, 2011
My network adapter is always disabled at startup. When I go to network and sharing centre - it shows that it is enabled. I dsable it, then enable it, and I can then go online. It is just annoying that I should have to do this each time before I can access the internet?
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Oct 24, 2011
recently I have been getting slow internet and download speeds at a later time in the day, when there is 3 or 2 internet connections that show up in my connections. one being mine virgin broadband, another sky and Bthomehub, whenever these connections are up my download speed on steam goes from 1.1mb/s to 250kb/s and i get the message from windows saying' 'windows has detected ip conflict'' I can still access the internet play games online fine, but my download speed is really slow and sometimes internet is slow aswell
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Nov 27, 2011
my net book does not launch WiFi on startup. Wireless assistant button's light is not on. when i launch my comp it says me module(701) error.
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Mar 21, 2011
Router is Airport. Interference to all am radios (in both cars, transister radio, and plugged in clock radios) within 10 m radius of our house. Have had router for two years, but problem started suddenly last Sunday morning. Figured it was the router by turning it off (no interference) then on again (interference returned).
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Jan 17, 2011
basically i have a desktop computer which i hook up directly to the router , anyway its coming up as an un identified network on network and sharing area , and when i select "connect to a network it only shows a PPoE Connection . I tried replugging the ethernet cable and it comes up an error message "windows has detected an IP address conflct"
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Sep 13, 2011
I recently got a new laptop with Windows 7 running 64bit OS. Setup the laptop with no firewall and no Antivirus programs. After installing the Any connect 2.5 VPN application I was able to successful connect to our ASA. I noticed if my laptop went into standby mode or if I rebooted the laptop the "Cisco Anyconnect Agent" is not running under service even though it is set to Automatic.
I have uninstalled and reinstall with no success and have even tried the new version 3.x with the same result. If I go into services and start the anyconnect agent I can launch the application and connect to my company with no problems. I was able to replicate this issue on a co-workers new laptop running Win7 64 that has no applications on it.
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Oct 21, 2011
I bought a few months ago a WRT54gl router for home use. It works nice and everything, but today was the second time it totaly resetet without pressing the reset button. Why the router is resetting by its own?
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Oct 14, 2012
I have a Cisco 2801 with flash: c2801-advipservicesk9-mz.124-16.bin where I use to doing VPN IPSEC.My problem is where I do a connection with a client, if my VPN dont have a traffic, the tunnel are closed. If a receive or send any traffic, the tunnel get up again.If don't have traffic, this tunnel is closed and after is opened other tunnel where is changed the conn-id to 999 for example.This comportament is normal? Exist a form that my tunnel never close? I enabled the parameters below: [code] But the tunnel continues closing if a don't have traffic.
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Oct 26, 2011
I was just at a "customer's" house doing some virus removals and what not. After I was done he asked me if I would network his printer to his 3 pc's throughout the house. 2 of the computers worked fine with the printer, but the one laptop (HP dv9000 running Vista 64 bit) wouldn't print unless I restarted it. I could click print, the job would go to the print queue, but that's it. It'd just stay there until I shut down the laptop and restarted it. Soon as vista would boot back up the job would automatically go on through and start printing.
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Apr 20, 2012
My CORE Switch 4507R Suddenly restarted (Powe is good) , and gets the business down for 30 Mts,my boss came to me and asks why it has restarted , what is the root cause of this restart, i dont have any syslog or NMS enabled in my network to be informed
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Jan 8, 2013
My customer is looking at using routers in DMVPN remote locations as DNS servers. He would like to be able to estimate how much memory the DNS cache will consume before going into production. I know you can get cache information when it's running, but he wants to plan ahead.I couldn't find any reports in Cisco or on the web of DNS caching causing memory issues, so I don't think he has much to worry about, but any rule of thumb as to how much memory each cache entry consumes would be useful. Or is there a protection mechanism to limit cache memory size in IOS ? The routers will be 877s and/or 1900-series.
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May 12, 2010
As the subject says, I've hooked up a Samsung BD player to a BEFSR41 router. The router has the current firmware version. When I run the connection test for the player, the local connection is good but the Internet connection fails and the message is " The HTTP port is disabled."
I've searched high and low for a solution to no avail. I did searches on the forum and couldn't find anything. As a test, I connected the BD player directly to the DSL modem and the Internet connection worked perfectly so it appears that the blockage is within the router.
I've serched through the router setup and have changed most settings to try and find something that would work. Nothing worked so I have returned my setup to its original state.
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Dec 21, 2011
I have a d-link dsl modem that reports it's getting the full 6 meg download speed from AT&T. I put the dsl modem in bridge mode so the E4200 will do the logon to AT&T with my credentials. If i do a speed check using CNET internet speed test, from both a desktop (wired 1gb card) and any laptop in the house (all draft n 2.4 or 5.0), it ranges anywhere from 3 meg to 4.3 meg. I have 6 cat-e ethernet cords everywhere. I do have 2 switches but have tried to unplug those to see if any difference
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Jan 22, 2011
I have a belkin f7d2301 and I cannot access the startup menu it says startup not found I have remove program and reinstalled it. is the disc bad. i also cannot do auto updates because it can't find startup location.
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Aug 1, 2012
My neighbour n myself are using a shared internet connection. The modem is situated in his house and I have connected to that modem using a LAN cable, which comes to my house. That LAN cable goes into my WiFi router (through which I use the internet connection). I use a Lap and my neighbour a Desktop, he's receiving a "IP address conflict error" in his system, due to which his internet connection is getting disrupted. If I don't use my Wifi router and connect directly through the LAN cable he does not face any problem. But I need my router back?
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Feb 4, 2011
I have a Netgear DG834PN Router. Connected to it usually are 2-3 laptops (XP, Vista, 7) wirelessly, a Xbox 360 and Win 7 PC via cables, a wireless printer and often an iPod touch, however PS3s, mobile phones etc are connected occasionally.
It had been functionally normally.until we changed ISP after ours was taken over (we didn't change but the provider obviously now has). However, since then (1st Feb) we've been having connection issues, probably an IP address conflict where items can access the router but not the internet.
The iPod and Xbox sometimes don't connect, as do the laptops often after been powered up from a sleep. Yesterday, when powering up one of the laptops, I got an IP address conflict message. Restarting the router sometimes works, but mostly it allows one device on and not another.
The printer has a static IP address (192.168.0.4) that I had to set up to get it working, but this has been active for months now without issue. I've had a look in the router settings and it's set up for DHCP as default with IP addresses from 192.168.0.2 to 192.168.0.254 so I don't understand why it has this issue suddenly. I had a look at the connected devices list, and everything appeared to have its own IP address.
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Jun 26, 2012
I recently changed my home configuration. I have AT&T DSL and I replaced my 2WIRE gateway with an AT&T provided Motorola Modem and a Linksys E2500 router on Sunday. For the last few days, all has been good. Last night and this morning, one of the computers in the house began getting IP conflict messages. The computer is provided by my company and uses the Cisco VPN client. I am not sure if it is conflicting because of the VPN (only seems to happen when it's connected) or with one of the other devices on the network (i have four other computers, a game system, and a few phones on the network).
Is there a way to prevent a conflict from happening again? My work requires me to have a constant connection for days at a time and these IP conflicts are causing constant headaches. Would creating a static IP address on the work computer outside of the DHCP range clear this up?
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Oct 8, 2012
Im setting up SBS 2011 in a new office. From what I understand, SBS 2011 needs to be the network DHCP server for everything to run well under Active Directory. The conflict is with a FIOS router, that also �needs� to be the DHCP server in order to communicate with a set-top box (MOCA bridge.) Verizon lists a handful of network configurations with multiple routers that might work, although completely unsupported. Is it possible for router, SBS2011, and set-top box to coexist in harmony on the same network (preferably keeping DHCP server on the SBS box)?
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Feb 25, 2013
I have manual Cisco 1812 (1811) Integrated Srvice Router Cabling and Installation in front of meI have Cisco 1811 connected to my laptop according to this manualI have Cisco SDM latest version installed on my laptopI have DHCP enabled on my laptopThe problem that my laptop can't get valid IP adreess from the router (see att. laptop_, laptop_2)
Which IP address I have to use in order to get access to router inrerface (see. SDM_1)?
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Mar 29, 2012
Every time I reset my 1841 router the startup configs don't load. Its acting like a password recovery process has started. I can't figure out why its doing it,
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Mar 23, 2011
How do I improve my Wireless Network Environment
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