Laptops Losing Connection On My Office Network?

May 17, 2011

I have 2 older xp pro tough books that connect to my domain via a pair of versa vx 400 access points. automobile technicians use these computers to communicate with cars via a separate wireless card and WiFi device (SPX MVXI) that broadcasts a wireless signal.they always connect just fine to the network but sometimes they drop there connection and don't rejoin which screws up my scheduled tasks (nightly upload). They will reacquire the connection every time if i select it again manually in the windows wireless is what I have done so far

1. set up exclusion range in DHCP distribution on my DC

2. set the laptops up with static IP's within the exclusion range.

3. configured the laptops to auto connect to the network even when its not broadcasting

4. set the access points on channel 7, and the devices on 1 and 11.

I have done a lot of research on this issue, a rep from versa told me that Intel proset wireless isn't very compatible with there product which i this is BS since it does the same with with the netgear WiFi PC cards.

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2 Laptops - 1 Keeps Losing Connection

Jan 29, 2011

I have 2 Laptops connected wirelessly, 1 Vista, the other Windows 7. The Vista laptop seems to be dropping the connection,when I look at 'Network & Sharing Centre on the Vista laptop, it's telling me signal strength excellent but with a red cross indicating there is a break between me and the internet. HOWEVER, the windows 7 laptop (on it now) is working perfectly OK!!

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Losing Internet Connection On Desktop After Power Failures But Not On Laptops?

Jan 29, 2011

I leave on one of my computers on all the time, an Acer desktop with Windows XP. I also have two laptops. I have Verizon DSL and a linksy wireless G router. When we have a power outage the Acer desk top loses it's internet connection. Trying to reconnect the connection takes hours. Even when we finally get it back we have no idea how we did it. The laptops which of course were off have no problem.

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How To Connect 3 Laptops To 1 Printer In Office

Apr 8, 2011

I was just wondering how to connect 3 laptops to 1 printer in my office?We don’t have a server and all laptop contacted to internet wireless through a router next door. (I don’t have access to that router)I was thinking to get a hub and then connect it to the Ethernet cable back of the printer and then connect it to each laptop?

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Losing Connection - Wireless Network Connection 2 Does Not Have A Valid IP Configuration?

Nov 15, 2012

I have an Acer 7750G, running Windows 7,connected to our home network using a Dynex router. At the moment this is the only laptop in the house that is having problems with connectivity. Starting yesterday, it only connects intermittently. When I run diagnostics, it says the following problems have been fixed but it either solves the problem for a few minutes only or not at all: "Problem with wireless adapter or access point" or "Default gateway is not available".

IPV6 connectivity also shows 'no internet access' and sometimes IPV4 reports no internet. I've unplugged and rebooted the modem and router a few times but that hasn't solved the problem.

Edit: I ran troubleshoot again, and it says the following issue is not fixed: "Wireless Network Connection 2 does not have a valid IP configuration".

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Home Network :: Bandwidth In Adhoc Connection Between 3 Laptops

Jul 20, 2011

I have three laptops (running ubuntu with different kernel versions) with wireless adapter Intel Corporation PRO/Wireless 3945 ABG. Laptop A ----- Laptop B ----- Laptop CI created an adhoc connection in laptop A with: Essid: 'ad_hoc', IP address:, Subnet:, Gateway:, Now the laptops B and C can see the wireless connection 'ad_hoc' and I can connect to them after setting IP and respectively. So, I created the adhoc connection between 3 laptops. Now, I wanted to check the bandwidth between the different paths. The tool iperf was what I used for TCP bandwidth calculation. The bandwidth between A and B was around 4.5 Mbps , between A and C was around 4.0 Mbps but the bandwidth between B and C (B being server) was 677 kbps whereas C being server was 3.99. I don't understand how can the bandwidth drop so high when B was made the server. The system adapters are identical.

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D-Link DIR-615 :: Wireless Laptops Loose Network Connection?

Jun 30, 2011

I have battling this issue since I bought this router, at least 2 years.


PC XP Wired
2 Acer laptops Vista wireless
All DHCP reserved
Security using wpa_psk

Not sure what other router info you need. All are connected to the internet, but can't see each other on the LAN. We can see each other from time to time. Sharing is allowed. Passwords are shared. I can power off the router and the network will be fine for about a day, then gone again. Workgroups are the same.

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May 10, 2012

No Network connection after Office 2010 install, I have limmited or no connectivity. I've removed and reloaded drivers, reset router, performed a netsh flush, tried to manually connect, kicked it, threw something at the wall and still no luck.

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Jan 29, 2013

I changed my password to my wireless connection and now I can't change it in my laptops network settings

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DLink And Linksys - Slow Network Connection In Office?

Jan 30, 2012

I am puzzled about some problems that occured at my work place. Unmanaged switch like D-link & Linksys was used and it worked pretty fine only for certain areas of the factory. Then office with more workers will be using managed switch to ensure the workers have decent connection to the local server.

Question is, why are some small offices' connection so ridiculously slow?


The switches manage 4PCs

Tested - The main connection cable cannot go through the switch to distribute the connection. Even if there is only 1 PC linked to the switch, it will still be slow. It will be at it's max if it didnt go through the switch, but directly to the PC instead.

True enough that unmanaged switch aren't smart enough to allocate the speed, but why is it possible for some other part of the small office to have fast connection even by using the normal unmanaged switch?

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Jan 2, 2013

We have a ASA 5505 setup with VPN and using Cisco client 5.0. The VPN works without a problem if we use normal internet access (from home, motel, etc). However if we use a cellular wi-fi hotspot or tether a phone it will connect to the vpn but will not allow us to get on the office network

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Nov 27, 2012

I have a problem with my home network (diagram attached below). I sporadically lose connection between my Router and the devices behind the switch. I have replaced the Ethernet cable between the 2 so I don't think the problem's there. It will work for a week or so, then just lose the connection. I then try a combination of rebooting all of the devices on the network and/or unplugging and re-plugging the cable connections and sometimes that works. It's a relatively new router, but can a router be "underpowered" for pushing a signa

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TP-Link 300Mbps Wireless :: TL-WR842ND VPN Connection To Office Network?

Jan 8, 2013

Region : Spain
Model : TL-WR842ND
Hardware Version : V1
Firmware Version : 3.12.22

I am trying to set up a VPN access to the office Windows network by setting the pptp options in the WAN area of the networks settings.

I have entered the public IP address of the office network and also the username and password required by the system. When clicking on the connect button the router attempts to connect but then returns a "disconnected" message.

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Network Computers Losing Connection After Going To Sleep

Jun 15, 2011

I have three computers on my network. Two are wired and one is wireless. I continually run into the probably of getting a limited connection after the computer goes to sleep and I wake it up. I attempt to automatically correct it, but this doesn't work. I try to use the command prompt with ipconfig/release ipconfig/renew and it doesn't work. Then I try to disconnect the adapter and it doesn't work. I also reset the modem and the router with no resolve. Most of the time the only thing that works is restarting the computer. In addition I do use DHCP static addresses for the computers on the network. What is causing this and how do I fixt it without restarting the computer?

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Sep 29, 2012

I am having a very frustrating problem with my new Dell XPS 8500's wireless connection - Dell Wireless 1703 802.11b/g/n (2.4GHz). Basically, I am losing my network connection every couple of minutes. The process goes something like this:

1) Not connected - Connections are available

2) My network disappears completely (yet all other local networks are still visible) for a matter of seconds then reappears

3) I try to connect and receive "Windows was unable to connect"

4) I press "Troubleshoot problems"

5) "Resolving problems", "Resetting network adapter", "Troubleshooting has completed"

6) Problem with wireless adapter or access point - Fixed

7) I am reconnected to the network/internet with a full 5 bars

8) Process repeats itself five minutes later

 I have been able to come to a conclusion that is not the adapter, or the router, but some sort of compatibility issue as:

a) I have tried connecting to a different wireless network and it has worked fine

b) There are other systems in the household that connect to the network and are not experiencing the same issue

It is not a distance issue as router is 2 meters away from the adapter with nothing in between, the other systems that use the network are much further away.

What I have tried so far: - Changing the channel from "Auto" to a set number

The router is a Belkin N300 Wireless N.

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Dell Pe2950 - Losing Partial Network Connection?

Jun 28, 2012

We are running Sharepoint 2007(sp3 and wss sp3) on a dell pe2950 running Server 2003 std x64 sp2, 4 146gb 15k sas raid 10, 16gb ram, dual xeon 516 3ghz. the network card is a quad port intel 1gb pci-x server nic. Was running broadcom net xtreme dual port onboard, and had the same issue.

We are losing partial network connection, after about 14-15 hours of the machine working correctly. What happens is that it cannot ping, or access, any machines not on the same network segment(this machine is on 192.168.3.* and cannot access machines, or be accessed from 192.168.2.*, 192.168.4.*, etc, etc). what i have found is that when i try to ping dns, dhcp server). its times out about 20 times and replies 2-3 times, and then repeats the cycle all over again. i have done a winsock reset on the machine, and sometimes it starts back up and works again, sometimes it doesn't.

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Jul 5, 2013

i have a Dell Inspiron 1440 notebook and it keeps either shutting off the wifi or losing the connection to the network i have replaced the WiFi card with a new one and tried a couple of other settings and it did great for a week and now its doing it again and also it doe's not go to sleep when you close the lid and i have it set to do that .

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Dell :: 1520 Inspiron Keeps Losing Network Connection

Oct 12, 2012

I have an Inspiron 1520 which, approximately once per day, is losing the network connection. Basically I can be right in the middle of something then all of a sudden anything internet related (eg browser, email, skype, other software) stops working, and then a few seconds later the little globe disappears from my network icon at the bottom of my screen. 

The only way to get my connection back is to reboot my computer. I've tried the "repair connection" tool, but that doesn't work. I've tried waiting, but that is futile (and impractical)

This happens whether I am directly attached to the router via cable, or I am going through wireless. 

Other devices are unaffected at the time. It is only my computer that loses the connection. The two phones, two other laptops, desktop and tablet all remain connected. (Hmmm - I seem to have far too many devices!)

Do I have a failing part? Or is this maybe a software issue? I'm thinking perhaps it is software because after a reboot everything returns to normal and the problem tends to go away for 24 hours or so. 

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Aug 23, 2009

I recently switched routers to the DIR-615 and I'm trying to troubleshoot why one of our laptops keeps losing the IP address and gets a self-assigned IP address.  I see the following messages in the log, I am wondering if the reason codes are listed and explained somewhere?  I tried searching the manual but could not find any information.

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Jun 2, 2011

Currently using a netgear WG602 wireless router which i use to connect to my 2nd PC and Iphone, with the Netgear router running from my main PC.I have recently been having trouble with my 2nd PC ad Iphone randomly losing connection and the only way for the connection to be reastablished is to reboot the wireless router. Once rebooted i am able to connect again to the internet with no problems, interestingly enough my main PC never loses connection. Also sometimes when i lose my connection and reboot the wireless router i will have a IP conflict pop up on my 2nd PC however i would i say i get this once in every 10 dissconects and not all the time. Sometimes i won't dissconect at all in a day but sometimes i may dissconect 5-6 times.

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Cisco Switching/Routing :: 1721 / Change Remote Site Network Configuration With / Without Losing Connection?

Sep 19, 2012

My company just assumed management of a remote entity.  The network has several misconfigurations and I need to make some network modifications from my office w/o losing access or incurring lengthy outage to the clients.  The network consists of 1721 router and  three 2960 switches.
- I only have access to the router from the Internet.  I telnet off the router to the 3 switches.
The site uses a single class C / 24.  The router is running RIPv2 even though this is the only network.  The prior network person (contractor) set up separate native vlans on each switch and all the ports are defined as Native trunk and access are defined to the VLAN interface  assigned to the switch.  So of course the logs are flooded with Native VLAN mismatch,  Each 2960 switch is a VTP server but has no VTP domain.  
basic network layout:
Internet  => Eth [Cisco 1721] => Fa 0  ==> [SW1]
 interface Vlan1
no ip address
no ip route-cache!interface Vlan220ip address ip route-cache

!interface GigabitEthernet0/1description SW2 Gi0/1switchport access vlan 204switchport trunk native vlan 204!interface GigabitEthernet0/2switchport access vlan 204switchport trunk native vlan 204!interface Vlan1no ip addressno ip route-cache!interface Vlan204ip address ip route-cache Normally, I would assign the current to a subinterface to Router Fe 0/0 but with each switch having its own native VLAN I am afraid I will lose connectivity to the downstream switches -- my only access is telnet off the Cisco1721 Router. 

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Dec 22, 2012

I would like to use internet connection by using one modem between two laptop. How can I do that?

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Aug 26, 2011

I have a small network, about 35 computers.There is 20 LAN PC computers (they use dns, active directory, dhcp), and there is 10 laptops. They connect on same D-Link wireless router( radius server authentication).After most of laptops is operational(connected on wireless router and on domain ), same two laptops always disconnect, and they can't regain connection . All laptops also get their ip addresses through dhcp.I tried all kind of wireless router configuration, I don't think it is dhcp or dns server problem, remote access policy is also very simple

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Oct 12, 2012

We recently acquired an internet connection. Connecting via LAN works fine for me but not to my room mates. We're all using Windows 7. Windows troubleshoot it and says "Local Area Connection doesn't have a valid IP configuration" on their laptops. What should we do?

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Jun 5, 2012

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Dec 12, 2011

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