Microsoft帐户用户可能更改了密码，从可信设备列表中删除了设备，或删除了
您的应用程序代表他们进行身份验证的权限。有关详细信息  请参阅&nbsp ; 授权
代码授予流程 。

***的问候，

埃里克跨度>

Hi,
I'm getting this error:

com.microsoft.bingads.OAuthTokenRequestException: Couldn't request OAuth AccessTokens. Please use the getDetails() method to get more information. Details: invalid_grant - The user could not be authenticated or the grant is expired. The user must first sign in and if needed grant the client application access to the requested scope.

Until yesterday everything worked perfectly. What could have changed?

Thank you

It is possible that the Microsoft Account user changed their password, removed a device from their list of trusted devices, or removed permissions for your application to authenticate on their behalf. For more information see Authorization Code Grant Flow.

Best regards,

Eric