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How do I resolve The underlying connection was closed with Microsoft Dynamics AX

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Overview

When trying to calculate tax with Avalara Avatax it results in the error message " The underlying connection was closed"

Environment

Dynamics AX

Resolution

  • The error message indicates that there was a interruption of service and there is a difficulty connecting to Avalara AvaTax. To check if Avalara is having troubles you can check here https://status.avalara.com/ but should subside with time.

 

  • Another reason for this to occur and this is because the timeout is set to 300ms and if it exceeds this period it will also error out.