Unable to contact your DHCP server Error in Windows 7, 8, 10

Unable to contact DHCP server when trying to rent, release or renew an IP address. This error means that your NIC cannot communicate with the DHCP server to obtain a new lease to retrieve a new IP address that it can use.

What is a DHCP server?

DHCP or Dynamic Host Configuration Protocol is a network protocol used to automatically assign IP addresses.

Why do I receive $ 0027? I cannot communicate with the DHCP server $ 0027

The error usually occurs after trying to run the command “ipconfig / renew” at the command prompt, and Windows problems that depend on this method can be difficult to solve. Then, you will be able to find several methods that have been confirmed to work for other users, so be sure to try them and, hopefully, Solve your problem!

Solution 1: update or remove network drivers

To be honest, updating and rolling back the controller are two opposite actions, but it all depends on which driver brought the error to your computer. If you are running older drivers that are no longer compatible with your computer, an update will almost certainly fix the problem.

However, if the problem started to occur after updating the driver one way or another; a reduction may be sufficient until a new and more secure driver is released. You must also upgrade or downgrade the network device that you are using to connect to the Internet (wireless, Ethernet, etc.), but doing the same process on all of them shouldn't cause any harm.

1. First, you will need to uninstall the driver that you currently have installed on your machine.

2. Scribe “Device administrator” in the search field next to the start menu button to open the device manager window. You can also use the Windows key combination + R to open the Run dialog. Type devmgmt.msc in the box and click OK or Enter.

1. Expand the section “Network adapters”. This will show all the network adapters that the machine has installed at the moment.

Update the driver:

1. Right-click on the network adapter you want to uninstall and select “Uninstall device”. This will remove the adapter from the list and uninstall the network device.

2. Click on “To accept” when prompted to uninstall the device.

1. Remove the adapter you are using from your computer and navigate to the manufacturer's page to see the list of drivers available for your operating system.. Choose last, download it and run it from the download folder.

1. Follow the onscreen instructions to install the driver. If the adapter is external, like a Wi-Fi dongle, make sure it remains disconnected until the wizard asks you to reconnect it to the computer. Restart your computer and check if the problem is gone.

Controller Backup:

1. Right click on the network adapter you want to uninstall and select Properties. After the Properties window opens, Navigate to the Driver tab and find the Restore Driver option.

1. If the option is grayed out, it means the device was not updated recently as it has no backup files reminiscent of the old driver. This also means that the recent driver update is probably not the cause of the problem.

2. If you have the option to click, do so and follow the on-screen instructions to continue the process. Restart your computer and check if the problem persists at the command prompt.

Solution 2: disable the driver related to VirtualBox

VirtualBox is a program developed and published by Oracle and is used to run and display various operating systems on various platforms. You can download and install it from its website and you may have used it in the past or are using it now.

However, your driver may mess things up on your computer a bit and disabling it from the internet connection you are using will not significantly affect the program, but it can help you solve your problem.

1. Open the Run dialog box by pressing the Windows logo key + the R key at the same time. Then write “ncpa.cpl” and click OK. It can also be achieved by opening the Control Panel. Change the view to Category and click Network and Internet. Click on the Network and Sharing Center section to open it, find the Change adapter settings option on the left side of the window and click on it.

1. Now that the Internet connection window is open, double click on your active network adapter.

2. Then click Properties and locate the VirtualBox Bridged Network Controller entry in the list. Clear the check box next to this entry and click OK. Restart your computer to confirm the changes and see if the error appears again.

Solution 3: test with a simple command

This simple command worked for a lucky user who complained about a problem in an online forum and it seems this answer helped other users too. Having said that, many Microsoft officials were surprised this worked, but it is a viable solution, So i could give it a try!

It will not do any harm to your computer, as it initiates manual dynamic registration of DNS names and IP addresses that are configured on a computer and are actually used to troubleshoot network related problems …

1. If you are a Windows user 10, you can easily locate the command prompt by simply clicking the start menu button or search button next to it and typing 'cmd’ or 'command prompt'. Right click on the first result and choose Run as administrator option.

1. If you are running a version of Windows earlier than Windows 10, Start menu search may or may not work properly, but you can still navigate to C >> Windows >> System32, right-click on the "cmd.exe" entry and select Run as administrator.

2. Type the command below and make sure to click Enter after:

ipconfig /registerdns

1. After viewing the message “the operation completed successfully” at the command prompt, click the close button or type “leave” at the command prompt, restart the computer and see if the problem is gone.

Solution 4: disable IPv6 on your active connection

This error “ipconfig” sometimes happens if IPv6 is enabled for your active connection and you don't have the required local gateway to connect. There are several users who were able to solve the problem in this way and it will not affect your experience as a consumer.

1. Open the Run dialog box by pressing the Windows logo key + the R key at the same time. Then write “ncpa.cpl” and click OK.

1. When the Internet connection window opens, double click on your active network adapter.

2. Then click on Properties and locate the entry for the Internet Protocol version 6 on the list. Clear the check box next to this entry and click OK. Restart your computer to confirm the changes and check if the problem occurs in “ipconfig” again.

Solution 5: (Re) start your DHCP customer service

DHCP customer service handled these issues and if the service stopped or malfunctioned, the best you can do is simply (re) start it and hope for the best. It has helped several users as this service absolutely needs to be running on your computer for commands like “ipconfig / renew”.

1. Open the Run dialog box using the Windows keyboard key combination + R. Scribe “services.msc” in the box without the quotes and click OK to open Services.

1. Find the DHCP Client Service in the list of services, right-click on it and select Properties from the context menu that appears.

2. If the service starts (you can mark it right next to the service status message), you should detect it immediately by clicking the Stop button in the middle of the window. If you are detained, leave it as it is (for now, of course).

1. Make sure the option in the startup type menu in the DHCP Customer Service properties is set to Automatic before continuing with the instructions. Confirm the dialog boxes that may appear when setting the startup type. Click the Start button in the center of the window before exiting.

You may receive the following error message when clicking Start:

"Windows could not start the DHCP client service on the local computer. Error 1079: the account specified for this service differs from the account specified for other services running in the same process.

If this happens, follow the instructions below to fix it.

1. Follow the steps 1 a 3 from the instructions above to open the DHCP Customer Service properties. Go to the login tab and click the Browse button …

1. In the frame “Enter the name of the object to select”, write the name of your account, click Verify Names and wait for the name to be recognized.

2. Click OK when done and type your password in the Password box when prompted, if you have set a password. Now it should start smoothly!

Solution 6: replace the antivirus program you are using

Although this last method may seem like a lot, Several users reported that certain free antivirus tools actually caused this problem and, by eliminating them, They managed to fix the problem after all the above methods have failed.

If you have tried the above solutions without success, consider using a different virus, especially if you are not going to pay for it. The main culprits of this problem are Avast and McAfee. However, the uninstall process can sometimes be avoided if you are using BitDefender Total Security, to be discussed at the bottom.

1. Click on the start menu and open the Control Panel by searching for it. Alternatively, you can click gear icon to open settings if you are using windows 10.

2. In the control panel, select View as: Category in the upper right corner and click Uninstall a program in the Programs section.

1. If you use the Settings app, by clicking Applications, a list of all programs installed on your PC will immediately open.

2. Find McAfee or Avast in your control panel or settings and click Uninstall.

3. The uninstall wizard will open and ask you to confirm your choice to uninstall or offer to uninstall or repair. Choose Uninstall and follow the onscreen instructions.

1. Click Finish when the uninstall process is complete and restart your computer to see if the errors continue to appear.

BitDefender Total Security users:

The problem can sometimes be solved if you use this antivirus program by disabling a certain option in the firewall settings. It seems that your firewall prevents this process from being carried out through this option, so you will have to disable it to continue.

1. Open the BitDefender user interface by double-clicking its icon on the desktop, by searching for it in the start menu or by double-clicking its icon in the system tray.

2. Click the Protection icon on the left sidebar of the Bitdefender user interface and click View Features.

1. Click the Settings icon in the upper right corner of the FIREWALL module and navigate to the Settings tab. You should be able to see the option Block port scans on the network here, so be sure to disable it before checking if the issue is still active.