Windows 10: how to move new device in my network to deny filter in dhcp server automatically

hi , i Have Win 2019 server , and i install AD, DNS,DHCP in Same Sever so ,i need to move new device in my network to deny filter in dhcp server automatically, Due I dont need any one to connect to my network without my approval .

:)

 

FIXED: ipconfig /renew returns Unable to Contact DHCP Server. DHCP Access Denied. A million errors with no solution.

There are steps here to try for DHCP giving Access Denied:

https://www.thewindowsclub.com/dhcp-client-serv...

https://www.wintips.org/how-to-fix-dhcp-service...



This can mean a corrupted User Account so try Step 16 in this checklist to create a new Test Admin user account to see if it resolves:

http://answers.microsoft.com/en-us/windows/wiki...

Try also resetting your network settings:

https://www.kapilarya.com/how-to-reset-network-...

 

Communicating with the DNS server

Since you got the error "unable to contact your DHCP server", this could be due to a disabled DHCP client. We suggest following these steps to enable it:

• Click Start.
• Type services.msc and press
  Enter.
• Find DHCP Client from the list of services and check the status.
• If DHCP Client isn't running, right-click it and choose
  Start.
• The DHCP Client Startup type should be
  Automatic. If it's not, double-click it, choose Automatic.
• Click Apply.
• Click OK.

Check if you can use the ipconfig /renew command after enabling the DHCP Client. If you're still unable to connect to the Internet after this, we recommend uninstalling your network
adapter driver by following these steps:

• Right-click the Start button and choose Device manager.
• Click the arrow beside Network adapters and double-click your network adapter.
• Go to the Driver tab.
• Click Uninstall device.
• Restart your computer. This will prompt Windows to automatically reinstall the correct driver.

Let us know what happens after enabling the DHCP Client and reinstalling the network adapter driver.

 

DHCP Filter

Hello everyone, i need to block unknown MAC addresses from using my network, i can sofar only block known MACs from getting to my network but i dont know if there is a possibility that i can block any unknown MAC if the person puts the right IP configuration when the MAC address is not in the "Allowed list" from my DHCP filter. thanks in advance