Turn off IDN encoding

Supported on: At least Windows Server 2012, Windows 8 or Windows RT

Registry

HKLM Software\Policies\Microsoft\Windows NT\DNSClient

Value name: DisableIdnEncoding

Enabled: DisableIdnEncoding = 1

Disabled: DisableIdnEncoding = 0

Description

Specifies whether the DNS client should convert internationalized domain names (IDNs) to Punycode when the DNS client is on non-domain networks with no WINS servers configured. If this policy setting is enabled, IDNs are not converted to Punycode. If this policy setting is disabled, or if this policy setting is not configured, IDNs are converted to Punycode when the DNS client is on non-domain networks with no WINS servers configured.