title: Azure Durable Function timeout exception
body: <p>I have an Azure Durable Function whose host.json file sets all functions to never timeout:
  {
  &quot;version&quot;: &quot;2.0&quot;,
  &quot;functionTimeout&quot;: &quot;-1&quot;,
  ...
  }
  }</p>
  <p>When the durable function is run though the activity function called by the orchestrator function gets a timeout after the default 30 minutes:</p>
  <pre><code>Timeout value of 00:30:00 was exceeded by function: LongRunningActivity
  </code></pre>
  <p>Microsoft.Azure.WebJobs.Host.FunctionTimeoutException:
  at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor+d__29.MoveNext (Microsoft.Azure.WebJobs.Host, Version=3.0.23.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35Microsoft.Azure.WebJobs.Host, Version=3.0.23.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionExecutor.csMicrosoft.Azure.WebJobs.Host, Version=3.0.23.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: 624)
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)</p>
  <p>The documentation states that the timeout defined in host.json should apply to all functions in the function app.</p>
  <p>Have I missed something? Or is this a bug in Azure Durable Functions?</p>