FAQ

Response 404 - UPNNotFound

It may not really be caused by UPNNotFound, but most caused by StoreFront authentication for various reasons:

  1. Communication error between Session Remote Start and StoreFront
    1. Open Web.config, double confirm the ‘StoreFrontServer’ option. A recommended practice is to set ‘StoreFrontServer’ by copy from ‘Receiver from Web Sites’ in StoreFront UI. Please note that the StoreFront store name is case-sensitive.
    2. Try to open ‘StoreFrontServer’ by browser, check if there is a connection or certificate error. (Do not need to login, just check if the web page can be visited normally.)
    3. Open CDF trace tool or enable Session Remote Start log file, check if there is any error detail.
  2. StoreFront issue Open Event Viewer -> Applications and Services Logs -> Citrix Delivery Services to check StoreFront log
  3. FAS issue For step #2, the error may be related to FAS, please refer to the FAS section of the checklist above.

Request Timeout

  • Session Remote Start has a ‘RequestTimeoutSeconds’ option in Web.config. When request duration reaches the timeout, Session Remote Start will respond with status code 408 and body content.
  • Session Remote Start will never terminate http connection without response. Please check if there is any timeout related setting in the caller.
  • For the ‘LaunchResource’ API, there is an optional parameter ‘WaitForLogonNotification’ recognized as true by default. For the VDAs really take a long time for launching, ‘WaitForLogonNotification’ can be set to false. API will respond immediately and execute the launching process in the backend.
FAQ