How to exclude an address from a scope?

To exclude an address from a scope

1. Open DHCP
2. In the console tree, click Address Pool.
3. On the Action menu, click New Exclusion Range.
4. In the Add Exclusion dialog box, type the Start IP address that you want to exclude from this scope. To exclude a range of more than one IP address, type and End IP address.
5. Click Add.

Windows Servers will not connect to network, it is says duplicate IP

I have schedule restart the server every week. Every Monday, I have got this issue. Windows server will not connect to network and all users in the company have problem log-on to domain. They cannot access the file server, network printer, etc...

Here how I solve this issue.

1.) Restart Domain Controller.
2.) Log-on to the domain with Domain Admin Account.
3.) Go to 'Regedit' and go to this patch. (HKEY_LOCAL_MACHINE\SYSTEM\CurrrentControlSet\Services\TCPIP\Parameters\)
4.) Right-click 'Parameters' and select 'DWARD (32- bit) Value'
5.) Rename DWARD (32 - bit) Value to 'ArpRetryCount' and Modify value '0'
6.) Restart Server.

 This is a way how I solved this issue.