title: path format is not supported in ssrs subscription
body: <p>I have created an SSRS standard subscription for one report.After the subscription's scheduled time,i am getting a message like "Failure writing file \D:\testexcels\FirstReport.html : The given path's format is not supported." in report manager subscription page.The sql server job is sucess and
  there was no error while entering path at the time of creation.I have tried with dfferent format like pdf,html etc but same error is comming.please help me. </p>
  
  <p><img src="https://i.stack.imgur.com/6LiUc.png" alt="enter image description here"></p>