Windows is using a DNS cache, so when you change DNS servers, you need to flush the cache before the new settings take effect. PowerShell is a friend with old console commands, so you can simply run this line in PowerShell:
PS> ipconfig /flushdns
Windows is using a DNS cache, so when you change DNS servers, you need to flush the cache before the new settings take effect. PowerShell is a friend with old console commands, so you can simply run this line in PowerShell:
PS> ipconfig /flushdns