Windows has detected an IP address conflict [Fix]
Internet is a major part of our lives, and most of us use it on everyday basis. Unfortunately, issues can occur that can prevent you from accessing the Internet.
What to do if Windows has detected an IP address conflict:
- Restart your router
- Use netsh and ipconfig commands
- Make sure that you’re not using a static IP address
- Disable IPv6
- Close VZAccess Manager
- Disconnect your Ethernet cable or disable the wireless adapter
- Change your router encryption
- Reconnect to your VPN service
- Change DHCP range and set your IP address manually
- Change the IP address of your wireless router
- Disconnect all network devices from your network and restart your router
- Change your DHCP lease
- Particular case – Windows has detected an IP address conflict bridged connection
Solution 1 – Restart your router
In most cases, Windows has detected an IP address conflict message appears due to certain glitches with your network configuration.
According to users, you can fix this problem simply by restarting your router. To do that, simply press the power button on your router to turn it off.
Wait for about 30 seconds and turn the router back on again. Wait until your router turns on completely and check if the problem is resolved.
This might be just a temporary solution, but it should help you fix the problem. Keep in mind that the issue can appear again, so you’ll have to repeat this solution.
Solution 2 – Use netsh and ipconfig commands
According to users, you might be able to fix the problem simply by using Command Prompt. To fix the issue, you need to do the following:
- Press Windows Key + X to open Win + X menu. Choose Command Prompt (Admin) from the menu.
- When Command Prompt starts, enter the following lines:
- netsh int ip reset
- ipconfig /release
- ipconfig /renew
- After all commands are executed, close Command Prompt and check if the issue is resolved.
Some users are also recommending to use a different set of commands to fix this issue. According to them, they used the following set of commands to fix this problem:
- netsh winsock reset catalog
- netsh int ipv4 reset
- netsh int ipv6 reset
Solution 3 – Make sure that you’re not using a static IP address
Some users prefer using a static IP address for their devices. This makes it easier for them to find a specific device on their network.
However, if you set a static address it can occur that another device has the same IP address, thus causing IP address conflict to occur. To fix the Windows has detected an IP address conflict message, you need to make sure that your device is using a dynamic IP address.
To do that, follow these steps:
- Press Windows Key + X and choose Network Connections from the menu.
- Locate your connection on the list, right click it and choose Properties from the menu.
- Select Internet Protocol Version 4 (TCP/IPv4) and click the Properties button.
- Make sure that Obtain an IP address automatically and Obtain DNS server address automatically options are checked. Click OK button to save changes.
- After making these changes, restart your PC and check if the problem is resolved.
Solution 4 – Disable IPv6
There are two types of IP addresses, IPv4 and IPv6. According to users, some devices aren’t compatible with IPv6, and that can cause this error to appear.
If you’re getting Windows has detected an IP address conflict message frequently, you might want to try disabling IPv6 on your PC. To do that, follow these steps:
- Open Network Connections window, locate your connection, right click it and choose Properties.
- List of options will appear. Locate Internet Protocol Version 6 (TCP/IPv6) and uncheck it. Now click OK to save changes.
After disabling IPv6, check if the problem is resolved. If you’re an advanced user, you can disable IPv6 for all network adapters. To do that, you need to modify your registry by following these steps:
- Press Windows Key + R and enter regedit. Press Enter or click OK.
- When Registry Editor opens, in the left pane navigate to the HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesTcpip6Parameters key.
- In the right pane, look for DisableComponent DWORD. If this DWORD isn’t available, you’ll need to create it. To do that, right click the empty space in the right pane and choose New > DWORD (32-bit) Value. Enter DisableComponent as the name of the new DWORD.
- Double click the new DisableComponent DWORD to open its properties. Change Value data to 0ffffffff and click OK to save changes.
- Close Registry Editor and restart your PC to apply the changes.
As you can see, this solution is rather simple, and if you want to disable IPv6 for a specific adapter simply follow the steps from the beginning of the solution. If you want to disable IPv6 for all adapters, you’ll have to disable IPv6 by modifying your registry.
- READ ALSO: Fix: ‘Advanced IP Scanner runtime error’
Solution 5 – Close VZAccess Manager
According to users, Windows has detected an IP address conflict message appears after disconnecting from the VZAccess Manager. Reports say that this error occurs if they disconnect from the VZAccess Manager without closing the application afterwards. This will cause the error message to appear again after reconnecting.
To fix this problem, users advise to disconnect from VZAccess Manager and close the application completely. After doing that, try to connect again and check if the error message appears.
Solution 6 – Disconnect your Ethernet cable or disable the wireless adapter
Few users reported that they encountered the same problem while trying to obtain a new IP address. If you’re frequently getting Windows has detected an IP address conflict message, you might want to try disconnecting your Ethernet cable. After doing that, wait for a few moments and connect your cable again.
If you don’t use Ethernet connection, you can fix this problem by disabling your wireless adapter. You can do that by following these steps:
- Press Windows Key + X and choose Device Manager from the list.
- Go to the Network adapters section and locate your Wi-Fi adapter. Right click it and choose Disable from the menu.
- After disabling your network adapter wait for a few moments. Now right click the adapter again and choose Enable from the menu.
After doing that, check if the IP conflict issue is resolved.
Solution 7 – Change your router encryption
According to a few users, you can solve this issue simply by changing the encryption type on your router. To do that you need to open your router’s configuration page and log in with your sign in details. Now navigate to the Wireless section and you should see encryption field available.
Changing the encryption from WEP to WPA2-PSK [AES] fixed the issue for them, so be sure to try that. In addition, you might have to experiment with different encryption methods until you find the one that works for you.
We have to mention that not all encryption methods are safe, and some offer better protection than the others.
After changing the encryption type, you’ll have to reconnect to the network on all wireless devices in your home.
- READ ALSO: FIX: Wi-Fi adapter won’t connect to router
Solution 8 – Reconnect to your VPN service
In order to protect your privacy online, you can use a VPN. Although VPN tools are extremely useful, they can sometimes cause Windows has detected an IP address conflict message to appear. According to users, this issue occurs when their computer wakes up from sleep mode.
It seems that VPN shuts down when users activate sleep mode thus causing this message to appear. To fix the problem, you need to restart your PC and reconnect to your VPN service. After doing that, the problem should be resolved completely.
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Solution 9 – Change DHCP range and set your IP address manually
If you keep getting Windows has detected an IP address conflict message on your PC, you might be able to fix it by setting a static IP address for your PC. Before you do that, you need to change DHCP settings on your router. DHCP is in charge for assigning IP addresses to all devices that are connected to your router.
To change how DHCP works you need to access your router’s configuration page. After doing that, open DHCP section and set the address range from 192.168.1.5 to 192.168.1.50. After doing that, all devices that are connected to your router will have an IP address between these two values.
Now you need to set a static IP address by following these steps:
- Open Network Connections window. Right click your connection and choose Properties from the menu.
- Select Internet Protocol Version 4 (TCP/IPv4) and click the Properties button.
- Now select Use the following IP address option and fill in all the fields. Be sure to enter DNS information as well. Regarding the IP address, use 192.168.1.51 or any other value that is outside of the DHCP range.
- After doing that, click OK to save changes.
If you don’t know which values to enter, you can see Gateway, DNS and Subnet mask address simply by checking the status of your current connection. To do that, do the following:
- Open Network Connections window. Locate your connection, right click it and choose Status from the menu. Alternatively, you can just double click the connection to open the Status window.
- When Status window opens, click on Details button.
From there you should be able to locate the necessary information.
After setting a static IP address that is outside of the DHCP range, you’ll ensure that your address is unique on your network thus eliminating the cause of this problem.
Solution 10 – Change the IP address of your wireless router
If you have both modem and wireless router, sometimes your network configuration can cause Windows has detected an IP address conflict message to appear.
To fix the issue, we are recommending to change the IP address of your wireless router. According to users, changing the address of wireless router to 184.108.40.206 fixed the issue for them, so be sure to try that solution.
Solution 11 – Disconnect all network devices from your network and restart your router
This error usually occurs if there are any issues with any of your network devices. Sometimes two devices can have the same IP address, and that can lead to network conflicts.
To fix this problem, we are suggesting to restart your router. However, sometimes router restart doesn’t fix the problem, so you’ll have to disconnect all devices from your network.
First, turn off your router. Now disconnect all devices from your network. This includes laptops, smartphones and any other network device. If your PC or any other device is connected via Ethernet cable, be sure to disconnect it.
Now turn on your router and wait until it starts completely. Turn on and connect your network devices one by one to your router. By doing so, you’ll ensure that all devices have a unique address assigned to them.
After connecting devices one by one to your router, the problem should be resolved. This solution may work only until you turn off your router, so if there’s a power outage you’ll have to repeat this solution.
Solution 12 – Change your DHCP lease
Sometimes Windows has detected an IP address conflict message appears due to your DHCP lease. DHCP lease is a value represented in seconds that specifies how long will assigned IP addresses be valid. After the lease time expires, your devices will obtain a new IP address.
According to users, it seems that this problem occurs because lease time was too short. To change the lease time, open your router’s configuration page and go to DHCP section. Now locate lease time and change it to 86400 seconds.
Save changes and check if that fixes the problem.
Particular case – Windows has detected an IP address conflict bridged connection
Solution – Use Internet Connection Sharing
You can fix this problem simply by disabling bridged connection. Users reported Windows has detected an IP address conflict message while using bridged connection, but you can easily avoid this problem. All you have to do is use Internet Connection Sharing instead, and the problem will be fixed.
Windows has detected an IP address conflict message can cause problems and it can prevent you from accessing the Internet. If you have this problem on your PC, we advise you to try some of our solutions.
Feel free to share your experience in the comments section below and tell us what worked for you or any other solution that you found.
Editor’s Note: This post was originally published in April 2017 and has been since completely revamped and updated for freshness, accuracy, and comprehensiveness
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