title: How to update Token to httpclient object/ all the async calls triggered from windows client while few are in progress
body: <p>We have a Windows application which reads a batch of files and upload them to server in loop.
  this batch of files are being uploading using httpclient.sendAsync.
  where after few file uploads are in progress or waiting the bearer token expires and has to be updated.
  If updated to client.DefaultAuthorizationHeaders, getting error &quot;cannot access disposed object&quot;.
  is there any way to update the client authorization headers so other requests which are in queue gets success full?</p>