If you are using a Bing AppID to access the Translator service, your authentication will no longer be valid after April 15, 2021 and your applications will no longer return translation results.

The legacy Bing AppID has been deprecated since September, 2011. Current Azure security policies are more secure than the Bing AppID authentication method.

Please transition your applications to the Azure authentication as soon as possible to continue using the Microsoft Translator service. Code changes are required. More information can be found in the Translator developer documentation.

Sign up for a Translator subscription on Azure.