The following are some common errors you may experience when using Alibaba Cloud .NET SDK. Potential causes and resolutions are shown for these commonly experienced errors.

Error code Cause Resolution
SDK.InvalidRegionId The SDK cannot automatically obtain the endpoint of the called product in the specified region. Provide the correct endpoint of the service to call. You can find the endpoint from the API documentation of the product.
InvalidAccessKeyId.NotFound The AccessKey ID is invalid. Provide a correct AccessKey ID.
SDK.ConnectionReset The endpoint cannot be connected when you initiate a request. Make sure your network is available.
SDK.InvalidProfile The DefaultAcsClient parameter that you provided when initializing DefaultAcsClient is invalid. Make sure that the DefaultProfile parameter object that you provided is properly initialized and configured with corresponding parameters.
SDK.SessionTokenExpired The DefaultAcsClient parameter that you provided when initializing DefaultAcsClient is invalid. Make sure that the SessionToken parameter is in the validity period, which generally is one hour.
SignatureDoesNotMatch The SessionToken you provided is invalid or has expired. Make sure that the DefaultProfile parameter object that you provided is properly initialized and configured with corresponding parameters.
SDK.InvalidProfile The AccessKey Secret does not match the AccessKey ID. Make sure that the AccessKey Secret is valid.