Disable Windows 10 DNS Cache services:
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Disable DNS Client through registry:

Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Dnscache,
Locate the Start registry key and change its value from 2 (Automatic) to 4 (Disabled)

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Disable DNS client through command line:
REG add "HKLM\SYSTEM\CurrentControlSet\services\Dnscache" /v Start /t REG_DWORD /d 4 /f

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From:
https://social.technet.microsoft.com/Forums/windows/en-US/a04284f9-cf27-4f37-82fe-31255f70625f/how-to-disable-windows-10-dns-cache-services

Date Found: 24th March 2019